Finding the Third Proportional to 57,414.94 and 86,179.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,414.94 : 86,179.50 = 86,179.50 : x
2. Step 2: Convert to fraction form
   57,414.94/86,179.50 = 86,179.50/x
3. Step 3: Cross multiply
   57,414.94x = 86,179.50 × 86,179.50
4. Step 4: Simplify right side
   57,414.94x = 7,426,906,220.25
5. Step 5: Solve for x
   x = 7,426,906,220.25/57,414.94
6. Step 6: Final answer
   x = 129,354.95