Finding the Third Proportional to 131,496 and 288,021

Step by Step Solution

1. Step 1: Write the proportion equation
   131,496 : 288,021 = 288,021 : x
2. Step 2: Convert to fraction form
   131,496/288,021 = 288,021/x
3. Step 3: Cross multiply
   131,496x = 288,021 × 288,021
4. Step 4: Simplify right side
   131,496x = 82,956,096,441
5. Step 5: Solve for x
   x = 82,956,096,441/131,496
6. Step 6: Final answer
   x = 630,864.03