Finding the Third Proportional to 267,612.50 and 391,372

Step by Step Solution

1. Step 1: Write the proportion equation
   267,612.50 : 391,372 = 391,372 : x
2. Step 2: Convert to fraction form
   267,612.50/391,372 = 391,372/x
3. Step 3: Cross multiply
   267,612.50x = 391,372 × 391,372
4. Step 4: Simplify right side
   267,612.50x = 153,172,042,384
5. Step 5: Solve for x
   x = 153,172,042,384/267,612.50
6. Step 6: Final answer
   x = 572,365.05