Finding the Third Proportional to 4,130,028 and 8,857,920

Step by Step Solution

1. Step 1: Write the proportion equation
   4,130,028 : 8,857,920 = 8,857,920 : x
2. Step 2: Convert to fraction form
   4,130,028/8,857,920 = 8,857,920/x
3. Step 3: Cross multiply
   4,130,028x = 8,857,920 × 8,857,920
4. Step 4: Simplify right side
   4,130,028x = 78,462,746,726,400
5. Step 5: Solve for x
   x = 78,462,746,726,400/4,130,028
6. Step 6: Final answer
   x = 18,998,114.96