Finding the Third Proportional to 5,617,766 and 8,485,687

Step by Step Solution

1. Step 1: Write the proportion equation
   5,617,766 : 8,485,687 = 8,485,687 : x
2. Step 2: Convert to fraction form
   5,617,766/8,485,687 = 8,485,687/x
3. Step 3: Cross multiply
   5,617,766x = 8,485,687 × 8,485,687
4. Step 4: Simplify right side
   5,617,766x = 72,006,883,861,969
5. Step 5: Solve for x
   x = 72,006,883,861,969/5,617,766
6. Step 6: Final answer
   x = 12,817,707.94