Finding the Third Proportional to 3,923,175 and 8,447,505

Step by Step Solution

1. Step 1: Write the proportion equation
   3,923,175 : 8,447,505 = 8,447,505 : x
2. Step 2: Convert to fraction form
   3,923,175/8,447,505 = 8,447,505/x
3. Step 3: Cross multiply
   3,923,175x = 8,447,505 × 8,447,505
4. Step 4: Simplify right side
   3,923,175x = 71,360,340,725,025
5. Step 5: Solve for x
   x = 71,360,340,725,025/3,923,175
6. Step 6: Final answer
   x = 18,189,436.04