Finding the Third Proportional to 404.37 and 635.98

Step by Step Solution

1. Step 1: Write the proportion equation
   404.37 : 635.98 = 635.98 : x
2. Step 2: Convert to fraction form
   404.37/635.98 = 635.98/x
3. Step 3: Cross multiply
   404.37x = 635.98 × 635.98
4. Step 4: Simplify right side
   404.37x = 404,466.19
5. Step 5: Solve for x
   x = 404,466.19/404.37
6. Step 6: Final answer
   x = 1,000.24