Finding the Third Proportional to 21.94 and 43.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21.94 : 43.16 = 43.16 : x
2. Step 2: Convert to fraction form
   21.94/43.16 = 43.16/x
3. Step 3: Cross multiply
   21.94x = 43.16 × 43.16
4. Step 4: Simplify right side
   21.94x = 1,862.51
5. Step 5: Solve for x
   x = 1,862.51/21.94
6. Step 6: Final answer
   x = 84.88