Finding the Third Proportional to 864,993 and 1,857,849

Step by Step Solution

1. Step 1: Write the proportion equation
   864,993 : 1,857,849 = 1,857,849 : x
2. Step 2: Convert to fraction form
   864,993/1,857,849 = 1,857,849/x
3. Step 3: Cross multiply
   864,993x = 1,857,849 × 1,857,849
4. Step 4: Simplify right side
   864,993x = 3,451,602,906,801
5. Step 5: Solve for x
   x = 3,451,602,906,801/864,993
6. Step 6: Final answer
   x = 3,990,324.67