Finding the Third Proportional to 3,983,922 and 8,643,384

Step by Step Solution

1. Step 1: Write the proportion equation
   3,983,922 : 8,643,384 = 8,643,384 : x
2. Step 2: Convert to fraction form
   3,983,922/8,643,384 = 8,643,384/x
3. Step 3: Cross multiply
   3,983,922x = 8,643,384 × 8,643,384
4. Step 4: Simplify right side
   3,983,922x = 74,708,086,971,456
5. Step 5: Solve for x
   x = 74,708,086,971,456/3,983,922
6. Step 6: Final answer
   x = 18,752,397.00