Finding the Third Proportional to 4,039,056 and 8,645,612

Step by Step Solution

1. Step 1: Write the proportion equation
   4,039,056 : 8,645,612 = 8,645,612 : x
2. Step 2: Convert to fraction form
   4,039,056/8,645,612 = 8,645,612/x
3. Step 3: Cross multiply
   4,039,056x = 8,645,612 × 8,645,612
4. Step 4: Simplify right side
   4,039,056x = 74,746,606,854,544
5. Step 5: Solve for x
   x = 74,746,606,854,544/4,039,056
6. Step 6: Final answer
   x = 18,505,959.52