Finding the Third Proportional to 98.13 and 213.38

Step by Step Solution

1. Step 1: Write the proportion equation
   98.13 : 213.38 = 213.38 : x
2. Step 2: Convert to fraction form
   98.13/213.38 = 213.38/x
3. Step 3: Cross multiply
   98.13x = 213.38 × 213.38
4. Step 4: Simplify right side
   98.13x = 45,528.89
5. Step 5: Solve for x
   x = 45,528.89/98.13
6. Step 6: Final answer
   x = 463.99