Finding the Third Proportional to 19.23 and 40.89

Step by Step Solution

1. Step 1: Write the proportion equation
   19.23 : 40.89 = 40.89 : x
2. Step 2: Convert to fraction form
   19.23/40.89 = 40.89/x
3. Step 3: Cross multiply
   19.23x = 40.89 × 40.89
4. Step 4: Simplify right side
   19.23x = 1,672.04
5. Step 5: Solve for x
   x = 1,672.04/19.23
6. Step 6: Final answer
   x = 86.93