Finding the Third Proportional to 3,591,420 and 7,980,042

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591,420 : 7,980,042 = 7,980,042 : x
2. Step 2: Convert to fraction form
   3,591,420/7,980,042 = 7,980,042/x
3. Step 3: Cross multiply
   3,591,420x = 7,980,042 × 7,980,042
4. Step 4: Simplify right side
   3,591,420x = 63,681,070,321,764
5. Step 5: Solve for x
   x = 63,681,070,321,764/3,591,420
6. Step 6: Final answer
   x = 17,731,446.15