Finding the Third Proportional to 411.38 and 604.88

Step by Step Solution

1. Step 1: Write the proportion equation
   411.38 : 604.88 = 604.88 : x
2. Step 2: Convert to fraction form
   411.38/604.88 = 604.88/x
3. Step 3: Cross multiply
   411.38x = 604.88 × 604.88
4. Step 4: Simplify right side
   411.38x = 365,873.77
5. Step 5: Solve for x
   x = 365,873.77/411.38
6. Step 6: Final answer
   x = 889.39