Finding the Third Proportional to 132,451.31 and 288,549

Step by Step Solution

1. Step 1: Write the proportion equation
   132,451.31 : 288,549 = 288,549 : x
2. Step 2: Convert to fraction form
   132,451.31/288,549 = 288,549/x
3. Step 3: Cross multiply
   132,451.31x = 288,549 × 288,549
4. Step 4: Simplify right side
   132,451.31x = 83,260,525,401
5. Step 5: Solve for x
   x = 83,260,525,401/132,451.31
6. Step 6: Final answer
   x = 628,612.31