Finding the Third Proportional to 131,744 and 288,472

Step by Step Solution

1. Step 1: Write the proportion equation
   131,744 : 288,472 = 288,472 : x
2. Step 2: Convert to fraction form
   131,744/288,472 = 288,472/x
3. Step 3: Cross multiply
   131,744x = 288,472 × 288,472
4. Step 4: Simplify right side
   131,744x = 83,216,094,784
5. Step 5: Solve for x
   x = 83,216,094,784/131,744
6. Step 6: Final answer
   x = 631,649.98