Finding the Third Proportional to 62,688 and 87,862.50

Step by Step Solution

1. Step 1: Write the proportion equation
   62,688 : 87,862.50 = 87,862.50 : x
2. Step 2: Convert to fraction form
   62,688/87,862.50 = 87,862.50/x
3. Step 3: Cross multiply
   62,688x = 87,862.50 × 87,862.50
4. Step 4: Simplify right side
   62,688x = 7,719,818,906.25
5. Step 5: Solve for x
   x = 7,719,818,906.25/62,688
6. Step 6: Final answer
   x = 123,146.68