Finding the Third Proportional to 399,493.50 and 855,849

Step by Step Solution

1. Step 1: Write the proportion equation
   399,493.50 : 855,849 = 855,849 : x
2. Step 2: Convert to fraction form
   399,493.50/855,849 = 855,849/x
3. Step 3: Cross multiply
   399,493.50x = 855,849 × 855,849
4. Step 4: Simplify right side
   399,493.50x = 732,477,510,801
5. Step 5: Solve for x
   x = 732,477,510,801/399,493.50
6. Step 6: Final answer
   x = 1,833,515.47