Finding the Third Proportional to 252,359.30 and 387,892.55

Step by Step Solution

1. Step 1: Write the proportion equation
   252,359.30 : 387,892.55 = 387,892.55 : x
2. Step 2: Convert to fraction form
   252,359.30/387,892.55 = 387,892.55/x
3. Step 3: Cross multiply
   252,359.30x = 387,892.55 × 387,892.55
4. Step 4: Simplify right side
   252,359.30x = 150,460,627,921.17
5. Step 5: Solve for x
   x = 150,460,627,921.17/252,359.30
6. Step 6: Final answer
   x = 596,215.91