Finding the Third Proportional to 404.06 and 854.53

Step by Step Solution

1. Step 1: Write the proportion equation
   404.06 : 854.53 = 854.53 : x
2. Step 2: Convert to fraction form
   404.06/854.53 = 854.53/x
3. Step 3: Cross multiply
   404.06x = 854.53 × 854.53
4. Step 4: Simplify right side
   404.06x = 730,223.66
5. Step 5: Solve for x
   x = 730,223.66/404.06
6. Step 6: Final answer
   x = 1,807.20