Finding the Third Proportional to 21,156 and 49,443

Step by Step Solution

1. Step 1: Write the proportion equation
   21,156 : 49,443 = 49,443 : x
2. Step 2: Convert to fraction form
   21,156/49,443 = 49,443/x
3. Step 3: Cross multiply
   21,156x = 49,443 × 49,443
4. Step 4: Simplify right side
   21,156x = 2,444,610,249
5. Step 5: Solve for x
   x = 2,444,610,249/21,156
6. Step 6: Final answer
   x = 115,551.63