Finding the Third Proportional to 4,534,878 and 9,954,384

Step by Step Solution

1. Step 1: Write the proportion equation
   4,534,878 : 9,954,384 = 9,954,384 : x
2. Step 2: Convert to fraction form
   4,534,878/9,954,384 = 9,954,384/x
3. Step 3: Cross multiply
   4,534,878x = 9,954,384 × 9,954,384
4. Step 4: Simplify right side
   4,534,878x = 99,089,760,819,456
5. Step 5: Solve for x
   x = 99,089,760,819,456/4,534,878
6. Step 6: Final answer
   x = 21,850,590.21