Finding the Third Proportional to 139.50 and 188.44

Step by Step Solution

1. Step 1: Write the proportion equation
   139.50 : 188.44 = 188.44 : x
2. Step 2: Convert to fraction form
   139.50/188.44 = 188.44/x
3. Step 3: Cross multiply
   139.50x = 188.44 × 188.44
4. Step 4: Simplify right side
   139.50x = 35,508.69
5. Step 5: Solve for x
   x = 35,508.69/139.50
6. Step 6: Final answer
   x = 254.54