Finding the Third Proportional to 399,500.50 and 855,863

Step by Step Solution

1. Step 1: Write the proportion equation
   399,500.50 : 855,863 = 855,863 : x
2. Step 2: Convert to fraction form
   399,500.50/855,863 = 855,863/x
3. Step 3: Cross multiply
   399,500.50x = 855,863 × 855,863
4. Step 4: Simplify right side
   399,500.50x = 732,501,474,769
5. Step 5: Solve for x
   x = 732,501,474,769/399,500.50
6. Step 6: Final answer
   x = 1,833,543.32