Finding the Third Proportional to 131,080 and 280,839

Step by Step Solution

1. Step 1: Write the proportion equation
   131,080 : 280,839 = 280,839 : x
2. Step 2: Convert to fraction form
   131,080/280,839 = 280,839/x
3. Step 3: Cross multiply
   131,080x = 280,839 × 280,839
4. Step 4: Simplify right side
   131,080x = 78,870,543,921
5. Step 5: Solve for x
   x = 78,870,543,921/131,080
6. Step 6: Final answer
   x = 601,697.77