Finding the Third Proportional to 394,317 and 855,067.50

Step by Step Solution

1. Step 1: Write the proportion equation
   394,317 : 855,067.50 = 855,067.50 : x
2. Step 2: Convert to fraction form
   394,317/855,067.50 = 855,067.50/x
3. Step 3: Cross multiply
   394,317x = 855,067.50 × 855,067.50
4. Step 4: Simplify right side
   394,317x = 731,140,429,556.25
5. Step 5: Solve for x
   x = 731,140,429,556.25/394,317
6. Step 6: Final answer
   x = 1,854,194.54