Finding the Third Proportional to 3,785,748 and 8,256,621

Step by Step Solution

1. Step 1: Write the proportion equation
   3,785,748 : 8,256,621 = 8,256,621 : x
2. Step 2: Convert to fraction form
   3,785,748/8,256,621 = 8,256,621/x
3. Step 3: Cross multiply
   3,785,748x = 8,256,621 × 8,256,621
4. Step 4: Simplify right side
   3,785,748x = 68,171,790,337,641
5. Step 5: Solve for x
   x = 68,171,790,337,641/3,785,748
6. Step 6: Final answer
   x = 18,007,482.36