Finding the Third Proportional to 172.38 and 371.25

Step by Step Solution

1. Step 1: Write the proportion equation
   172.38 : 371.25 = 371.25 : x
2. Step 2: Convert to fraction form
   172.38/371.25 = 371.25/x
3. Step 3: Cross multiply
   172.38x = 371.25 × 371.25
4. Step 4: Simplify right side
   172.38x = 137,826.56
5. Step 5: Solve for x
   x = 137,826.56/172.38
6. Step 6: Final answer
   x = 799.57