Finding the Third Proportional to 21,451.50 and 30,891.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,451.50 : 30,891.38 = 30,891.38 : x
2. Step 2: Convert to fraction form
   21,451.50/30,891.38 = 30,891.38/x
3. Step 3: Cross multiply
   21,451.50x = 30,891.38 × 30,891.38
4. Step 4: Simplify right side
   21,451.50x = 954,277,049.39
5. Step 5: Solve for x
   x = 954,277,049.39/21,451.50
6. Step 6: Final answer
   x = 44,485.33