Finding the Third Proportional to 131,406 and 288,244.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,406 : 288,244.50 = 288,244.50 : x
2. Step 2: Convert to fraction form
   131,406/288,244.50 = 288,244.50/x
3. Step 3: Cross multiply
   131,406x = 288,244.50 × 288,244.50
4. Step 4: Simplify right side
   131,406x = 83,084,891,780.25
5. Step 5: Solve for x
   x = 83,084,891,780.25/131,406
6. Step 6: Final answer
   x = 632,276.24