Finding the Third Proportional to 12,739.50 and 27,222.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,739.50 : 27,222.75 = 27,222.75 : x
2. Step 2: Convert to fraction form
   12,739.50/27,222.75 = 27,222.75/x
3. Step 3: Cross multiply
   12,739.50x = 27,222.75 × 27,222.75
4. Step 4: Simplify right side
   12,739.50x = 741,078,117.56
5. Step 5: Solve for x
   x = 741,078,117.56/12,739.50
6. Step 6: Final answer
   x = 58,171.68