Finding the Third Proportional to 3,591,628 and 7,980,420

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591,628 : 7,980,420 = 7,980,420 : x
2. Step 2: Convert to fraction form
   3,591,628/7,980,420 = 7,980,420/x
3. Step 3: Cross multiply
   3,591,628x = 7,980,420 × 7,980,420
4. Step 4: Simplify right side
   3,591,628x = 63,687,103,376,400
5. Step 5: Solve for x
   x = 63,687,103,376,400/3,591,628
6. Step 6: Final answer
   x = 17,732,099.03