Finding the Third Proportional to 3,989,596 and 8,262,980

Step by Step Solution

1. Step 1: Write the proportion equation
   3,989,596 : 8,262,980 = 8,262,980 : x
2. Step 2: Convert to fraction form
   3,989,596/8,262,980 = 8,262,980/x
3. Step 3: Cross multiply
   3,989,596x = 8,262,980 × 8,262,980
4. Step 4: Simplify right side
   3,989,596x = 68,276,838,480,400
5. Step 5: Solve for x
   x = 68,276,838,480,400/3,989,596
6. Step 6: Final answer
   x = 17,113,722.41