Finding the Third Proportional to 4,323,920 and 9,478,048

Step by Step Solution

1. Step 1: Write the proportion equation
   4,323,920 : 9,478,048 = 9,478,048 : x
2. Step 2: Convert to fraction form
   4,323,920/9,478,048 = 9,478,048/x
3. Step 3: Cross multiply
   4,323,920x = 9,478,048 × 9,478,048
4. Step 4: Simplify right side
   4,323,920x = 89,833,393,890,304
5. Step 5: Solve for x
   x = 89,833,393,890,304/4,323,920
6. Step 6: Final answer
   x = 20,775,914.89