Finding the Third Proportional to 131,279 and 288,088

Step by Step Solution

1. Step 1: Write the proportion equation
   131,279 : 288,088 = 288,088 : x
2. Step 2: Convert to fraction form
   131,279/288,088 = 288,088/x
3. Step 3: Cross multiply
   131,279x = 288,088 × 288,088
4. Step 4: Simplify right side
   131,279x = 82,994,695,744
5. Step 5: Solve for x
   x = 82,994,695,744/131,279
6. Step 6: Final answer
   x = 632,200.85