Finding the Third Proportional to 333.35 and 491.45

Step by Step Solution

1. Step 1: Write the proportion equation
   333.35 : 491.45 = 491.45 : x
2. Step 2: Convert to fraction form
   333.35/491.45 = 491.45/x
3. Step 3: Cross multiply
   333.35x = 491.45 × 491.45
4. Step 4: Simplify right side
   333.35x = 241,522.33
5. Step 5: Solve for x
   x = 241,522.33/333.35
6. Step 6: Final answer
   x = 724.53