Finding the Third Proportional to 3,954,728 and 8,669,257

Step by Step Solution

1. Step 1: Write the proportion equation
   3,954,728 : 8,669,257 = 8,669,257 : x
2. Step 2: Convert to fraction form
   3,954,728/8,669,257 = 8,669,257/x
3. Step 3: Cross multiply
   3,954,728x = 8,669,257 × 8,669,257
4. Step 4: Simplify right side
   3,954,728x = 75,156,016,932,049
5. Step 5: Solve for x
   x = 75,156,016,932,049/3,954,728
6. Step 6: Final answer
   x = 19,004,092.55