Finding the Third Proportional to 21,186 and 41,836

Step by Step Solution

1. Step 1: Write the proportion equation
   21,186 : 41,836 = 41,836 : x
2. Step 2: Convert to fraction form
   21,186/41,836 = 41,836/x
3. Step 3: Cross multiply
   21,186x = 41,836 × 41,836
4. Step 4: Simplify right side
   21,186x = 1,750,250,896
5. Step 5: Solve for x
   x = 1,750,250,896/21,186
6. Step 6: Final answer
   x = 82,613.56