Finding the Third Proportional to 21,530 and 31,443

Step by Step Solution

1. Step 1: Write the proportion equation
   21,530 : 31,443 = 31,443 : x
2. Step 2: Convert to fraction form
   21,530/31,443 = 31,443/x
3. Step 3: Cross multiply
   21,530x = 31,443 × 31,443
4. Step 4: Simplify right side
   21,530x = 988,662,249
5. Step 5: Solve for x
   x = 988,662,249/21,530
6. Step 6: Final answer
   x = 45,920.22