Finding the Third Proportional to 303.47 and 663.89

Step by Step Solution

1. Step 1: Write the proportion equation
   303.47 : 663.89 = 663.89 : x
2. Step 2: Convert to fraction form
   303.47/663.89 = 663.89/x
3. Step 3: Cross multiply
   303.47x = 663.89 × 663.89
4. Step 4: Simplify right side
   303.47x = 440,750.76
5. Step 5: Solve for x
   x = 440,750.76/303.47
6. Step 6: Final answer
   x = 1,452.38