Finding the Third Proportional to 21,855 and 33,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,855 : 33,418.50 = 33,418.50 : x
2. Step 2: Convert to fraction form
   21,855/33,418.50 = 33,418.50/x
3. Step 3: Cross multiply
   21,855x = 33,418.50 × 33,418.50
4. Step 4: Simplify right side
   21,855x = 1,116,796,142.25
5. Step 5: Solve for x
   x = 1,116,796,142.25/21,855
6. Step 6: Final answer
   x = 51,100.26