Finding the Third Proportional to 394,315.50 and 855,063

Step by Step Solution

1. Step 1: Write the proportion equation
   394,315.50 : 855,063 = 855,063 : x
2. Step 2: Convert to fraction form
   394,315.50/855,063 = 855,063/x
3. Step 3: Cross multiply
   394,315.50x = 855,063 × 855,063
4. Step 4: Simplify right side
   394,315.50x = 731,132,733,969
5. Step 5: Solve for x
   x = 731,132,733,969/394,315.50
6. Step 6: Final answer
   x = 1,854,182.08