Finding the Third Proportional to 131,305 and 280,105

Step by Step Solution

1. Step 1: Write the proportion equation
   131,305 : 280,105 = 280,105 : x
2. Step 2: Convert to fraction form
   131,305/280,105 = 280,105/x
3. Step 3: Cross multiply
   131,305x = 280,105 × 280,105
4. Step 4: Simplify right side
   131,305x = 78,458,811,025
5. Step 5: Solve for x
   x = 78,458,811,025/131,305
6. Step 6: Final answer
   x = 597,531.02