Finding the Third Proportional to 5,071,659 and 7,854,345

Step by Step Solution

1. Step 1: Write the proportion equation
   5,071,659 : 7,854,345 = 7,854,345 : x
2. Step 2: Convert to fraction form
   5,071,659/7,854,345 = 7,854,345/x
3. Step 3: Cross multiply
   5,071,659x = 7,854,345 × 7,854,345
4. Step 4: Simplify right side
   5,071,659x = 61,690,735,379,025
5. Step 5: Solve for x
   x = 61,690,735,379,025/5,071,659
6. Step 6: Final answer
   x = 12,163,817.67