Finding the Third Proportional to 27.05 and 42.48

Step by Step Solution

1. Step 1: Write the proportion equation
   27.05 : 42.48 = 42.48 : x
2. Step 2: Convert to fraction form
   27.05/42.48 = 42.48/x
3. Step 3: Cross multiply
   27.05x = 42.48 × 42.48
4. Step 4: Simplify right side
   27.05x = 1,804.34
5. Step 5: Solve for x
   x = 1,804.34/27.05
6. Step 6: Final answer
   x = 66.70