Finding the Third Proportional to 3,939,192 and 8,568,564

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,192 : 8,568,564 = 8,568,564 : x
2. Step 2: Convert to fraction form
   3,939,192/8,568,564 = 8,568,564/x
3. Step 3: Cross multiply
   3,939,192x = 8,568,564 × 8,568,564
4. Step 4: Simplify right side
   3,939,192x = 73,420,289,022,096
5. Step 5: Solve for x
   x = 73,420,289,022,096/3,939,192
6. Step 6: Final answer
   x = 18,638,413.42