Finding the Third Proportional to 549.56 and 603.56

Step by Step Solution

1. Step 1: Write the proportion equation
   549.56 : 603.56 = 603.56 : x
2. Step 2: Convert to fraction form
   549.56/603.56 = 603.56/x
3. Step 3: Cross multiply
   549.56x = 603.56 × 603.56
4. Step 4: Simplify right side
   549.56x = 364,287.69
5. Step 5: Solve for x
   x = 364,287.69/549.56
6. Step 6: Final answer
   x = 662.87