Finding the Third Proportional to 21,404 and 51,564

Step by Step Solution

1. Step 1: Write the proportion equation
   21,404 : 51,564 = 51,564 : x
2. Step 2: Convert to fraction form
   21,404/51,564 = 51,564/x
3. Step 3: Cross multiply
   21,404x = 51,564 × 51,564
4. Step 4: Simplify right side
   21,404x = 2,658,846,096
5. Step 5: Solve for x
   x = 2,658,846,096/21,404
6. Step 6: Final answer
   x = 124,221.93