Finding the Third Proportional to 18.50 and 30.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18.50 : 30.50 = 30.50 : x
2. Step 2: Convert to fraction form
   18.50/30.50 = 30.50/x
3. Step 3: Cross multiply
   18.50x = 30.50 × 30.50
4. Step 4: Simplify right side
   18.50x = 930.25
5. Step 5: Solve for x
   x = 930.25/18.50
6. Step 6: Final answer
   x = 50.28