Finding the Third Proportional to 20,403 and 43,256

Step by Step Solution

1. Step 1: Write the proportion equation
   20,403 : 43,256 = 43,256 : x
2. Step 2: Convert to fraction form
   20,403/43,256 = 43,256/x
3. Step 3: Cross multiply
   20,403x = 43,256 × 43,256
4. Step 4: Simplify right side
   20,403x = 1,871,081,536
5. Step 5: Solve for x
   x = 1,871,081,536/20,403
6. Step 6: Final answer
   x = 91,706.20