Finding the Third Proportional to 3,115,689 and 6,479,055

Step by Step Solution

1. Step 1: Write the proportion equation
   3,115,689 : 6,479,055 = 6,479,055 : x
2. Step 2: Convert to fraction form
   3,115,689/6,479,055 = 6,479,055/x
3. Step 3: Cross multiply
   3,115,689x = 6,479,055 × 6,479,055
4. Step 4: Simplify right side
   3,115,689x = 41,978,153,693,025
5. Step 5: Solve for x
   x = 41,978,153,693,025/3,115,689
6. Step 6: Final answer
   x = 13,473,152.71