Finding the Third Proportional to 2,658,476 and 3,986,739

Step by Step Solution

1. Step 1: Write the proportion equation
   2,658,476 : 3,986,739 = 3,986,739 : x
2. Step 2: Convert to fraction form
   2,658,476/3,986,739 = 3,986,739/x
3. Step 3: Cross multiply
   2,658,476x = 3,986,739 × 3,986,739
4. Step 4: Simplify right side
   2,658,476x = 15,894,087,854,121
5. Step 5: Solve for x
   x = 15,894,087,854,121/2,658,476
6. Step 6: Final answer
   x = 5,978,646.36