Finding the Third Proportional to 196.25 and 248.88

Step by Step Solution

1. Step 1: Write the proportion equation
   196.25 : 248.88 = 248.88 : x
2. Step 2: Convert to fraction form
   196.25/248.88 = 248.88/x
3. Step 3: Cross multiply
   196.25x = 248.88 × 248.88
4. Step 4: Simplify right side
   196.25x = 61,938.77
5. Step 5: Solve for x
   x = 61,938.77/196.25
6. Step 6: Final answer
   x = 315.61