Finding the Third Proportional to 21,216 and 49,904

Step by Step Solution

1. Step 1: Write the proportion equation
   21,216 : 49,904 = 49,904 : x
2. Step 2: Convert to fraction form
   21,216/49,904 = 49,904/x
3. Step 3: Cross multiply
   21,216x = 49,904 × 49,904
4. Step 4: Simplify right side
   21,216x = 2,490,409,216
5. Step 5: Solve for x
   x = 2,490,409,216/21,216
6. Step 6: Final answer
   x = 117,383.54