Finding the Third Proportional to 3,855,643 and 8,375,020

Step by Step Solution

1. Step 1: Write the proportion equation
   3,855,643 : 8,375,020 = 8,375,020 : x
2. Step 2: Convert to fraction form
   3,855,643/8,375,020 = 8,375,020/x
3. Step 3: Cross multiply
   3,855,643x = 8,375,020 × 8,375,020
4. Step 4: Simplify right side
   3,855,643x = 70,140,960,000,400
5. Step 5: Solve for x
   x = 70,140,960,000,400/3,855,643
6. Step 6: Final answer
   x = 18,191,767.24