Finding the Third Proportional to 221.91 and 341.30

Step by Step Solution

1. Step 1: Write the proportion equation
   221.91 : 341.30 = 341.30 : x
2. Step 2: Convert to fraction form
   221.91/341.30 = 341.30/x
3. Step 3: Cross multiply
   221.91x = 341.30 × 341.30
4. Step 4: Simplify right side
   221.91x = 116,483.56
5. Step 5: Solve for x
   x = 116,483.56/221.91
6. Step 6: Final answer
   x = 524.92