Finding the Third Proportional to 5,420,161 and 7,980,496

Step by Step Solution

1. Step 1: Write the proportion equation
   5,420,161 : 7,980,496 = 7,980,496 : x
2. Step 2: Convert to fraction form
   5,420,161/7,980,496 = 7,980,496/x
3. Step 3: Cross multiply
   5,420,161x = 7,980,496 × 7,980,496
4. Step 4: Simplify right side
   5,420,161x = 63,688,316,406,016
5. Step 5: Solve for x
   x = 63,688,316,406,016/5,420,161
6. Step 6: Final answer
   x = 11,750,262.84