Finding the Third Proportional to 12,123 and 17,057.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,123 : 17,057.25 = 17,057.25 : x
2. Step 2: Convert to fraction form
   12,123/17,057.25 = 17,057.25/x
3. Step 3: Cross multiply
   12,123x = 17,057.25 × 17,057.25
4. Step 4: Simplify right side
   12,123x = 290,949,777.56
5. Step 5: Solve for x
   x = 290,949,777.56/12,123
6. Step 6: Final answer
   x = 23,999.82