Finding the Third Proportional to 3,855,485 and 8,375,620

Step by Step Solution

1. Step 1: Write the proportion equation
   3,855,485 : 8,375,620 = 8,375,620 : x
2. Step 2: Convert to fraction form
   3,855,485/8,375,620 = 8,375,620/x
3. Step 3: Cross multiply
   3,855,485x = 8,375,620 × 8,375,620
4. Step 4: Simplify right side
   3,855,485x = 70,151,010,384,400
5. Step 5: Solve for x
   x = 70,151,010,384,400/3,855,485
6. Step 6: Final answer
   x = 18,195,119.52