Finding the Third Proportional to 72.75 and 103.13

Step by Step Solution

1. Step 1: Write the proportion equation
   72.75 : 103.13 = 103.13 : x
2. Step 2: Convert to fraction form
   72.75/103.13 = 103.13/x
3. Step 3: Cross multiply
   72.75x = 103.13 × 103.13
4. Step 4: Simplify right side
   72.75x = 10,634.77
5. Step 5: Solve for x
   x = 10,634.77/72.75
6. Step 6: Final answer
   x = 146.18