Finding the Third Proportional to 404.75 and 857.88

Step by Step Solution

1. Step 1: Write the proportion equation
   404.75 : 857.88 = 857.88 : x
2. Step 2: Convert to fraction form
   404.75/857.88 = 857.88/x
3. Step 3: Cross multiply
   404.75x = 857.88 × 857.88
4. Step 4: Simplify right side
   404.75x = 735,949.52
5. Step 5: Solve for x
   x = 735,949.52/404.75
6. Step 6: Final answer
   x = 1,818.28