Finding the Third Proportional to 53,155.13 and 85,646.25

Step by Step Solution

1. Step 1: Write the proportion equation
   53,155.13 : 85,646.25 = 85,646.25 : x
2. Step 2: Convert to fraction form
   53,155.13/85,646.25 = 85,646.25/x
3. Step 3: Cross multiply
   53,155.13x = 85,646.25 × 85,646.25
4. Step 4: Simplify right side
   53,155.13x = 7,335,280,139.06
5. Step 5: Solve for x
   x = 7,335,280,139.06/53,155.13
6. Step 6: Final answer
   x = 137,997.61