Finding the Third Proportional to 100.23 and 113.73

Step by Step Solution

1. Step 1: Write the proportion equation
   100.23 : 113.73 = 113.73 : x
2. Step 2: Convert to fraction form
   100.23/113.73 = 113.73/x
3. Step 3: Cross multiply
   100.23x = 113.73 × 113.73
4. Step 4: Simplify right side
   100.23x = 12,934.62
5. Step 5: Solve for x
   x = 12,934.62/100.23
6. Step 6: Final answer
   x = 129.05