Finding the Third Proportional to 3,984,387 and 5,980,661

Step by Step Solution

1. Step 1: Write the proportion equation
   3,984,387 : 5,980,661 = 5,980,661 : x
2. Step 2: Convert to fraction form
   3,984,387/5,980,661 = 5,980,661/x
3. Step 3: Cross multiply
   3,984,387x = 5,980,661 × 5,980,661
4. Step 4: Simplify right side
   3,984,387x = 35,768,305,996,921
5. Step 5: Solve for x
   x = 35,768,305,996,921/3,984,387
6. Step 6: Final answer
   x = 8,977,116.43