Finding the Third Proportional to 77,718.75 and 123,472.50

Step by Step Solution

1. Step 1: Write the proportion equation
   77,718.75 : 123,472.50 = 123,472.50 : x
2. Step 2: Convert to fraction form
   77,718.75/123,472.50 = 123,472.50/x
3. Step 3: Cross multiply
   77,718.75x = 123,472.50 × 123,472.50
4. Step 4: Simplify right side
   77,718.75x = 15,245,458,256.25
5. Step 5: Solve for x
   x = 15,245,458,256.25/77,718.75
6. Step 6: Final answer
   x = 196,161.91