Finding the Third Proportional to 72.50 and 104

Step by Step Solution

1. Step 1: Write the proportion equation
   72.50 : 104 = 104 : x
2. Step 2: Convert to fraction form
   72.50/104 = 104/x
3. Step 3: Cross multiply
   72.50x = 104 × 104
4. Step 4: Simplify right side
   72.50x = 10,816
5. Step 5: Solve for x
   x = 10,816/72.50
6. Step 6: Final answer
   x = 149.19