Finding the Third Proportional to 3,591,648 and 7,980,460

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591,648 : 7,980,460 = 7,980,460 : x
2. Step 2: Convert to fraction form
   3,591,648/7,980,460 = 7,980,460/x
3. Step 3: Cross multiply
   3,591,648x = 7,980,460 × 7,980,460
4. Step 4: Simplify right side
   3,591,648x = 63,687,741,811,600
5. Step 5: Solve for x
   x = 63,687,741,811,600/3,591,648
6. Step 6: Final answer
   x = 17,732,178.05