I'm assuming that K is a point, instead of a distance.....
The distance between J and L = 93 - 18 = 75
If K is 2/3 of the distance between J and L, it could be located 75 *2/3 = 50 units from either point
So.....K could be located at 18 + 50 = 68
Or...it could be located at 93 - 50 = 43
