Finding the Third Proportional to 72,651.75 and 98,128.13

Step by Step Solution

1. Step 1: Write the proportion equation
   72,651.75 : 98,128.13 = 98,128.13 : x
2. Step 2: Convert to fraction form
   72,651.75/98,128.13 = 98,128.13/x
3. Step 3: Cross multiply
   72,651.75x = 98,128.13 × 98,128.13
4. Step 4: Simplify right side
   72,651.75x = 9,629,128,916.02
5. Step 5: Solve for x
   x = 9,629,128,916.02/72,651.75
6. Step 6: Final answer
   x = 132,538.16