Finding the Third Proportional to 19.56 and 42.48

Step by Step Solution

1. Step 1: Write the proportion equation
   19.56 : 42.48 = 42.48 : x
2. Step 2: Convert to fraction form
   19.56/42.48 = 42.48/x
3. Step 3: Cross multiply
   19.56x = 42.48 × 42.48
4. Step 4: Simplify right side
   19.56x = 1,804.59
5. Step 5: Solve for x
   x = 1,804.59/19.56
6. Step 6: Final answer
   x = 92.27