Finding the Third Proportional to 333.42 and 622.55

Step by Step Solution

1. Step 1: Write the proportion equation
   333.42 : 622.55 = 622.55 : x
2. Step 2: Convert to fraction form
   333.42/622.55 = 622.55/x
3. Step 3: Cross multiply
   333.42x = 622.55 × 622.55
4. Step 4: Simplify right side
   333.42x = 387,564.61
5. Step 5: Solve for x
   x = 387,564.61/333.42
6. Step 6: Final answer
   x = 1,162.39