Finding the Third Proportional to 144 and 189.38

Step by Step Solution

1. Step 1: Write the proportion equation
   144 : 189.38 = 189.38 : x
2. Step 2: Convert to fraction form
   144/189.38 = 189.38/x
3. Step 3: Cross multiply
   144x = 189.38 × 189.38
4. Step 4: Simplify right side
   144x = 35,862.89
5. Step 5: Solve for x
   x = 35,862.89/144
6. Step 6: Final answer
   x = 249.05