Finding the Third Proportional to 21,687 and 50,388

Step by Step Solution

1. Step 1: Write the proportion equation
   21,687 : 50,388 = 50,388 : x
2. Step 2: Convert to fraction form
   21,687/50,388 = 50,388/x
3. Step 3: Cross multiply
   21,687x = 50,388 × 50,388
4. Step 4: Simplify right side
   21,687x = 2,538,950,544
5. Step 5: Solve for x
   x = 2,538,950,544/21,687
6. Step 6: Final answer
   x = 117,072.46