I have done already a profile graph in ArcMap drawing a diagonal line over a DEM image. Now I would like to add some point locations as it is showed in the attached figure. I set these blue points in an approximated location. However, I would like to know the UTM coordinates of the x-axis of this profile. It is to know where exactly can I match my location points in the x-axis of this graph (points which already I know their coordinates). When I export the data from this Profile Graph, the x-axis give me distance values from 0 to ~190,000 m. And what I need is the real coordinates and no distances from A to B.
Is there some method to know these x-coordinates of this profile graph?