Finding the Third Proportional to 15.50 and 30.88

Step by Step Solution

1. Step 1: Write the proportion equation
   15.50 : 30.88 = 30.88 : x
2. Step 2: Convert to fraction form
   15.50/30.88 = 30.88/x
3. Step 3: Cross multiply
   15.50x = 30.88 × 30.88
4. Step 4: Simplify right side
   15.50x = 953.27
5. Step 5: Solve for x
   x = 953.27/15.50
6. Step 6: Final answer
   x = 61.50