Finding the Third Proportional to 306.23 and 667.55

Step by Step Solution

1. Step 1: Write the proportion equation
   306.23 : 667.55 = 667.55 : x
2. Step 2: Convert to fraction form
   306.23/667.55 = 667.55/x
3. Step 3: Cross multiply
   306.23x = 667.55 × 667.55
4. Step 4: Simplify right side
   306.23x = 445,618.83
5. Step 5: Solve for x
   x = 445,618.83/306.23
6. Step 6: Final answer
   x = 1,455.16