Finding the Third Proportional to 131,432 and 285,008

Step by Step Solution

1. Step 1: Write the proportion equation
   131,432 : 285,008 = 285,008 : x
2. Step 2: Convert to fraction form
   131,432/285,008 = 285,008/x
3. Step 3: Cross multiply
   131,432x = 285,008 × 285,008
4. Step 4: Simplify right side
   131,432x = 81,229,560,064
5. Step 5: Solve for x
   x = 81,229,560,064/131,432
6. Step 6: Final answer
   x = 618,034.88