Based on the drawing would another recep be required--thats my point.?
I think I see your concern. But AFAIK, one face of the countertop in question is considered the front face, and the opposite will be the back. If the back is at (or in your case 3" from?) a wall, then the 24" linear dimension is measured along that wall. If the countertop is deeper than 24" (very common indeed), then there is no need to put an outlet closer to the front of the counter than the wall.
Operating under that principle, as long as you do not think that the 3" extension of the countertop creates a new front and back edge of the cabinet, the only receptacle requirement is along the 24" wall and the 27" wall does not come into play.
In the case of a corner, where the countertop has a significant depth along each wall and extends more than a trivial distance beyond the rectangle defining the corner space, you have created a second set of front and back edges which would have to be covered separately under (C)(1). But IMHO your 3" extension "countertop" does not require another receptacle outlet because it is less than 12" wide.
I am willing to accept that some inspectors will consider your drawing to show a 24" countertop to the left of the corner and a 27" rather than a 3" countertop to the right of the counter. Again, IMHO, they would be wrong.
If you have a "real" corner counter, then I agree that the single outlet in the middle of the 24" wall would not allow you to extend the countertop to the right of the corner by six feet and say that the single receptacle outlet still covers it.