Finding the Third Proportional to 101.44 and 218.72

Step by Step Solution

1. Step 1: Write the proportion equation
   101.44 : 218.72 = 218.72 : x
2. Step 2: Convert to fraction form
   101.44/218.72 = 218.72/x
3. Step 3: Cross multiply
   101.44x = 218.72 × 218.72
4. Step 4: Simplify right side
   101.44x = 47,837.89
5. Step 5: Solve for x
   x = 47,837.89/101.44
6. Step 6: Final answer
   x = 471.60