Finding the Third Proportional to 2,607,986 and 3,989,469

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607,986 : 3,989,469 = 3,989,469 : x
2. Step 2: Convert to fraction form
   2,607,986/3,989,469 = 3,989,469/x
3. Step 3: Cross multiply
   2,607,986x = 3,989,469 × 3,989,469
4. Step 4: Simplify right side
   2,607,986x = 15,915,862,901,961
5. Step 5: Solve for x
   x = 15,915,862,901,961/2,607,986
6. Step 6: Final answer
   x = 6,102,740.93