Finding the Third Proportional to 221.06 and 298.27

Step by Step Solution

1. Step 1: Write the proportion equation
   221.06 : 298.27 = 298.27 : x
2. Step 2: Convert to fraction form
   221.06/298.27 = 298.27/x
3. Step 3: Cross multiply
   221.06x = 298.27 × 298.27
4. Step 4: Simplify right side
   221.06x = 88,962.38
5. Step 5: Solve for x
   x = 88,962.38/221.06
6. Step 6: Final answer
   x = 402.43