Finding the Third Proportional to 3,953,920 and 8,632,960

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953,920 : 8,632,960 = 8,632,960 : x
2. Step 2: Convert to fraction form
   3,953,920/8,632,960 = 8,632,960/x
3. Step 3: Cross multiply
   3,953,920x = 8,632,960 × 8,632,960
4. Step 4: Simplify right side
   3,953,920x = 74,527,998,361,600
5. Step 5: Solve for x
   x = 74,527,998,361,600/3,953,920
6. Step 6: Final answer
   x = 18,849,141.70