Finding the Third Proportional to 5,420,162 and 7,980,498

Step by Step Solution

1. Step 1: Write the proportion equation
   5,420,162 : 7,980,498 = 7,980,498 : x
2. Step 2: Convert to fraction form
   5,420,162/7,980,498 = 7,980,498/x
3. Step 3: Cross multiply
   5,420,162x = 7,980,498 × 7,980,498
4. Step 4: Simplify right side
   5,420,162x = 63,688,348,328,004
5. Step 5: Solve for x
   x = 63,688,348,328,004/5,420,162
6. Step 6: Final answer
   x = 11,750,266.57