Finding the Third Proportional to 131,409 and 288,250.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,409 : 288,250.50 = 288,250.50 : x
2. Step 2: Convert to fraction form
   131,409/288,250.50 = 288,250.50/x
3. Step 3: Cross multiply
   131,409x = 288,250.50 × 288,250.50
4. Step 4: Simplify right side
   131,409x = 83,088,350,750.25
5. Step 5: Solve for x
   x = 83,088,350,750.25/131,409
6. Step 6: Final answer
   x = 632,288.13