Finding the Third Proportional to 19.81 and 43.10

Step by Step Solution

1. Step 1: Write the proportion equation
   19.81 : 43.10 = 43.10 : x
2. Step 2: Convert to fraction form
   19.81/43.10 = 43.10/x
3. Step 3: Cross multiply
   19.81x = 43.10 × 43.10
4. Step 4: Simplify right side
   19.81x = 1,857.55
5. Step 5: Solve for x
   x = 1,857.55/19.81
6. Step 6: Final answer
   x = 93.76