Finding the Third Proportional to 5,221,707 and 7,982,679

Step by Step Solution

1. Step 1: Write the proportion equation
   5,221,707 : 7,982,679 = 7,982,679 : x
2. Step 2: Convert to fraction form
   5,221,707/7,982,679 = 7,982,679/x
3. Step 3: Cross multiply
   5,221,707x = 7,982,679 × 7,982,679
4. Step 4: Simplify right side
   5,221,707x = 63,723,164,017,041
5. Step 5: Solve for x
   x = 63,723,164,017,041/5,221,707
6. Step 6: Final answer
   x = 12,203,512.00