Finding the Third Proportional to 8,413,456 and 18,419,040

Step by Step Solution

1. Step 1: Write the proportion equation
   8,413,456 : 18,419,040 = 18,419,040 : x
2. Step 2: Convert to fraction form
   8,413,456/18,419,040 = 18,419,040/x
3. Step 3: Cross multiply
   8,413,456x = 18,419,040 × 18,419,040
4. Step 4: Simplify right side
   8,413,456x = 339,261,034,521,600
5. Step 5: Solve for x
   x = 339,261,034,521,600/8,413,456
6. Step 6: Final answer
   x = 40,323,623.79