Finding the Third Proportional to 3,591,668 and 7,980,499

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591,668 : 7,980,499 = 7,980,499 : x
2. Step 2: Convert to fraction form
   3,591,668/7,980,499 = 7,980,499/x
3. Step 3: Cross multiply
   3,591,668x = 7,980,499 × 7,980,499
4. Step 4: Simplify right side
   3,591,668x = 63,688,364,289,001
5. Step 5: Solve for x
   x = 63,688,364,289,001/3,591,668
6. Step 6: Final answer
   x = 17,732,252.62