Finding the Third Proportional to 3,591,631 and 7,980,422

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591,631 : 7,980,422 = 7,980,422 : x
2. Step 2: Convert to fraction form
   3,591,631/7,980,422 = 7,980,422/x
3. Step 3: Cross multiply
   3,591,631x = 7,980,422 × 7,980,422
4. Step 4: Simplify right side
   3,591,631x = 63,687,135,298,084
5. Step 5: Solve for x
   x = 63,687,135,298,084/3,591,631
6. Step 6: Final answer
   x = 17,732,093.11