Finding the Third Proportional to 3,863,259 and 8,399,124

Step by Step Solution

1. Step 1: Write the proportion equation
   3,863,259 : 8,399,124 = 8,399,124 : x
2. Step 2: Convert to fraction form
   3,863,259/8,399,124 = 8,399,124/x
3. Step 3: Cross multiply
   3,863,259x = 8,399,124 × 8,399,124
4. Step 4: Simplify right side
   3,863,259x = 70,545,283,967,376
5. Step 5: Solve for x
   x = 70,545,283,967,376/3,863,259
6. Step 6: Final answer
   x = 18,260,562.90