Finding the Third Proportional to 4,170,611 and 9,138,384

Step by Step Solution

1. Step 1: Write the proportion equation
   4,170,611 : 9,138,384 = 9,138,384 : x
2. Step 2: Convert to fraction form
   4,170,611/9,138,384 = 9,138,384/x
3. Step 3: Cross multiply
   4,170,611x = 9,138,384 × 9,138,384
4. Step 4: Simplify right side
   4,170,611x = 83,510,062,131,456
5. Step 5: Solve for x
   x = 83,510,062,131,456/4,170,611
6. Step 6: Final answer
   x = 20,023,459.90