Finding the Third Proportional to 117.44 and 253.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117.44 : 253.72 = 253.72 : x
2. Step 2: Convert to fraction form
   117.44/253.72 = 253.72/x
3. Step 3: Cross multiply
   117.44x = 253.72 × 253.72
4. Step 4: Simplify right side
   117.44x = 64,373.20
5. Step 5: Solve for x
   x = 64,373.20/117.44
6. Step 6: Final answer
   x = 548.15