Finding the Third Proportional to 3,591,624 and 7,980,411

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591,624 : 7,980,411 = 7,980,411 : x
2. Step 2: Convert to fraction form
   3,591,624/7,980,411 = 7,980,411/x
3. Step 3: Cross multiply
   3,591,624x = 7,980,411 × 7,980,411
4. Step 4: Simplify right side
   3,591,624x = 63,686,959,728,921
5. Step 5: Solve for x
   x = 63,686,959,728,921/3,591,624
6. Step 6: Final answer
   x = 17,732,078.78