Finding the Third Proportional to 172.31 and 250.31

Step by Step Solution

1. Step 1: Write the proportion equation
   172.31 : 250.31 = 250.31 : x
2. Step 2: Convert to fraction form
   172.31/250.31 = 250.31/x
3. Step 3: Cross multiply
   172.31x = 250.31 × 250.31
4. Step 4: Simplify right side
   172.31x = 62,656.35
5. Step 5: Solve for x
   x = 62,656.35/172.31
6. Step 6: Final answer
   x = 363.62