Finding the Third Proportional to 21,389.25 and 51,529.13

Step by Step Solution

1. Step 1: Write the proportion equation
   21,389.25 : 51,529.13 = 51,529.13 : x
2. Step 2: Convert to fraction form
   21,389.25/51,529.13 = 51,529.13/x
3. Step 3: Cross multiply
   21,389.25x = 51,529.13 × 51,529.13
4. Step 4: Simplify right side
   21,389.25x = 2,655,250,723.27
5. Step 5: Solve for x
   x = 2,655,250,723.27/21,389.25
6. Step 6: Final answer
   x = 124,139.50