Finding the Third Proportional to 131,253 and 280,499

Step by Step Solution

1. Step 1: Write the proportion equation
   131,253 : 280,499 = 280,499 : x
2. Step 2: Convert to fraction form
   131,253/280,499 = 280,499/x
3. Step 3: Cross multiply
   131,253x = 280,499 × 280,499
4. Step 4: Simplify right side
   131,253x = 78,679,689,001
5. Step 5: Solve for x
   x = 78,679,689,001/131,253
6. Step 6: Final answer
   x = 599,450.60