Finding the Third Proportional to 5,221,721 and 7,982,700

Step by Step Solution

1. Step 1: Write the proportion equation
   5,221,721 : 7,982,700 = 7,982,700 : x
2. Step 2: Convert to fraction form
   5,221,721/7,982,700 = 7,982,700/x
3. Step 3: Cross multiply
   5,221,721x = 7,982,700 × 7,982,700
4. Step 4: Simplify right side
   5,221,721x = 63,723,499,290,000
5. Step 5: Solve for x
   x = 63,723,499,290,000/5,221,721
6. Step 6: Final answer
   x = 12,203,543.48