Finding the Third Proportional to 4,039,856 and 8,839,816

Step by Step Solution

1. Step 1: Write the proportion equation
   4,039,856 : 8,839,816 = 8,839,816 : x
2. Step 2: Convert to fraction form
   4,039,856/8,839,816 = 8,839,816/x
3. Step 3: Cross multiply
   4,039,856x = 8,839,816 × 8,839,816
4. Step 4: Simplify right side
   4,039,856x = 78,142,346,913,856
5. Step 5: Solve for x
   x = 78,142,346,913,856/4,039,856
6. Step 6: Final answer
   x = 19,342,854.53