Finding the Third Proportional to 2,645,431 and 3,957,858

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645,431 : 3,957,858 = 3,957,858 : x
2. Step 2: Convert to fraction form
   2,645,431/3,957,858 = 3,957,858/x
3. Step 3: Cross multiply
   2,645,431x = 3,957,858 × 3,957,858
4. Step 4: Simplify right side
   2,645,431x = 15,664,639,948,164
5. Step 5: Solve for x
   x = 15,664,639,948,164/2,645,431
6. Step 6: Final answer
   x = 5,921,394.26