Finding the Third Proportional to 401.52 and 606.55

Step by Step Solution

1. Step 1: Write the proportion equation
   401.52 : 606.55 = 606.55 : x
2. Step 2: Convert to fraction form
   401.52/606.55 = 606.55/x
3. Step 3: Cross multiply
   401.52x = 606.55 × 606.55
4. Step 4: Simplify right side
   401.52x = 367,903.85
5. Step 5: Solve for x
   x = 367,903.85/401.52
6. Step 6: Final answer
   x = 916.28