Finding the Third Proportional to 400.89 and 599.73

Step by Step Solution

1. Step 1: Write the proportion equation
   400.89 : 599.73 = 599.73 : x
2. Step 2: Convert to fraction form
   400.89/599.73 = 599.73/x
3. Step 3: Cross multiply
   400.89x = 599.73 × 599.73
4. Step 4: Simplify right side
   400.89x = 359,681.91
5. Step 5: Solve for x
   x = 359,681.91/400.89
6. Step 6: Final answer
   x = 897.20