Finding the Third Proportional to 5,221,685 and 7,982,610

Step by Step Solution

1. Step 1: Write the proportion equation
   5,221,685 : 7,982,610 = 7,982,610 : x
2. Step 2: Convert to fraction form
   5,221,685/7,982,610 = 7,982,610/x
3. Step 3: Cross multiply
   5,221,685x = 7,982,610 × 7,982,610
4. Step 4: Simplify right side
   5,221,685x = 63,722,062,412,100
5. Step 5: Solve for x
   x = 63,722,062,412,100/5,221,685
6. Step 6: Final answer
   x = 12,203,352.45