Finding the Third Proportional to 3,993,662 and 8,617,180

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993,662 : 8,617,180 = 8,617,180 : x
2. Step 2: Convert to fraction form
   3,993,662/8,617,180 = 8,617,180/x
3. Step 3: Cross multiply
   3,993,662x = 8,617,180 × 8,617,180
4. Step 4: Simplify right side
   3,993,662x = 74,255,791,152,400
5. Step 5: Solve for x
   x = 74,255,791,152,400/3,993,662
6. Step 6: Final answer
   x = 18,593,409.04