Finding the Third Proportional to 3,218,856 and 4,510,920

Step by Step Solution

1. Step 1: Write the proportion equation
   3,218,856 : 4,510,920 = 4,510,920 : x
2. Step 2: Convert to fraction form
   3,218,856/4,510,920 = 4,510,920/x
3. Step 3: Cross multiply
   3,218,856x = 4,510,920 × 4,510,920
4. Step 4: Simplify right side
   3,218,856x = 20,348,399,246,400
5. Step 5: Solve for x
   x = 20,348,399,246,400/3,218,856
6. Step 6: Final answer
   x = 6,321,624.59