Finding the Third Proportional to 367.17 and 404.30

Step by Step Solution

1. Step 1: Write the proportion equation
   367.17 : 404.30 = 404.30 : x
2. Step 2: Convert to fraction form
   367.17/404.30 = 404.30/x
3. Step 3: Cross multiply
   367.17x = 404.30 × 404.30
4. Step 4: Simplify right side
   367.17x = 163,455.96
5. Step 5: Solve for x
   x = 163,455.96/367.17
6. Step 6: Final answer
   x = 445.18