Finding the Third Proportional to 4,039,892 and 8,839,888

Step by Step Solution

1. Step 1: Write the proportion equation
   4,039,892 : 8,839,888 = 8,839,888 : x
2. Step 2: Convert to fraction form
   4,039,892/8,839,888 = 8,839,888/x
3. Step 3: Cross multiply
   4,039,892x = 8,839,888 × 8,839,888
4. Step 4: Simplify right side
   4,039,892x = 78,143,619,852,544
5. Step 5: Solve for x
   x = 78,143,619,852,544/4,039,892
6. Step 6: Final answer
   x = 19,342,997.25