Finding the Third Proportional to 3,491,998 and 5,387,507

Step by Step Solution

1. Step 1: Write the proportion equation
   3,491,998 : 5,387,507 = 5,387,507 : x
2. Step 2: Convert to fraction form
   3,491,998/5,387,507 = 5,387,507/x
3. Step 3: Cross multiply
   3,491,998x = 5,387,507 × 5,387,507
4. Step 4: Simplify right side
   3,491,998x = 29,025,231,675,049
5. Step 5: Solve for x
   x = 29,025,231,675,049/3,491,998
6. Step 6: Final answer
   x = 8,311,926.78