Finding the Third Proportional to 3,591,672 and 7,980,507

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591,672 : 7,980,507 = 7,980,507 : x
2. Step 2: Convert to fraction form
   3,591,672/7,980,507 = 7,980,507/x
3. Step 3: Cross multiply
   3,591,672x = 7,980,507 × 7,980,507
4. Step 4: Simplify right side
   3,591,672x = 63,688,491,977,049
5. Step 5: Solve for x
   x = 63,688,491,977,049/3,591,672
6. Step 6: Final answer
   x = 17,732,268.42