Finding the Third Proportional to 57,135.38 and 86,842.13

Step by Step Solution

1. Step 1: Write the proportion equation
   57,135.38 : 86,842.13 = 86,842.13 : x
2. Step 2: Convert to fraction form
   57,135.38/86,842.13 = 86,842.13/x
3. Step 3: Cross multiply
   57,135.38x = 86,842.13 × 86,842.13
4. Step 4: Simplify right side
   57,135.38x = 7,541,554,674.52
5. Step 5: Solve for x
   x = 7,541,554,674.52/57,135.38
6. Step 6: Final answer
   x = 131,994.49