Finding the Third Proportional to 3,940,257 and 8,553,087

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940,257 : 8,553,087 = 8,553,087 : x
2. Step 2: Convert to fraction form
   3,940,257/8,553,087 = 8,553,087/x
3. Step 3: Cross multiply
   3,940,257x = 8,553,087 × 8,553,087
4. Step 4: Simplify right side
   3,940,257x = 73,155,297,229,569
5. Step 5: Solve for x
   x = 73,155,297,229,569/3,940,257
6. Step 6: Final answer
   x = 18,566,123.28