Finding the Third Proportional to 21,101 and 43,255

Step by Step Solution

1. Step 1: Write the proportion equation
   21,101 : 43,255 = 43,255 : x
2. Step 2: Convert to fraction form
   21,101/43,255 = 43,255/x
3. Step 3: Cross multiply
   21,101x = 43,255 × 43,255
4. Step 4: Simplify right side
   21,101x = 1,870,995,025
5. Step 5: Solve for x
   x = 1,870,995,025/21,101
6. Step 6: Final answer
   x = 88,668.55