Finding the Third Proportional to 5,187,892 and 8,287,782

Step by Step Solution

1. Step 1: Write the proportion equation
   5,187,892 : 8,287,782 = 8,287,782 : x
2. Step 2: Convert to fraction form
   5,187,892/8,287,782 = 8,287,782/x
3. Step 3: Cross multiply
   5,187,892x = 8,287,782 × 8,287,782
4. Step 4: Simplify right side
   5,187,892x = 68,687,330,479,524
5. Step 5: Solve for x
   x = 68,687,330,479,524/5,187,892
6. Step 6: Final answer
   x = 13,239,930.68