Finding the Third Proportional to 3,591,622 and 7,980,405

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591,622 : 7,980,405 = 7,980,405 : x
2. Step 2: Convert to fraction form
   3,591,622/7,980,405 = 7,980,405/x
3. Step 3: Cross multiply
   3,591,622x = 7,980,405 × 7,980,405
4. Step 4: Simplify right side
   3,591,622x = 63,686,863,964,025
5. Step 5: Solve for x
   x = 63,686,863,964,025/3,591,622
6. Step 6: Final answer
   x = 17,732,061.99