Finding the Third Proportional to 131,656.50 and 288,315

Step by Step Solution

1. Step 1: Write the proportion equation
   131,656.50 : 288,315 = 288,315 : x
2. Step 2: Convert to fraction form
   131,656.50/288,315 = 288,315/x
3. Step 3: Cross multiply
   131,656.50x = 288,315 × 288,315
4. Step 4: Simplify right side
   131,656.50x = 83,125,539,225
5. Step 5: Solve for x
   x = 83,125,539,225/131,656.50
6. Step 6: Final answer
   x = 631,381.96