Finding the Third Proportional to 12,845.50 and 19,215.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,845.50 : 19,215.75 = 19,215.75 : x
2. Step 2: Convert to fraction form
   12,845.50/19,215.75 = 19,215.75/x
3. Step 3: Cross multiply
   12,845.50x = 19,215.75 × 19,215.75
4. Step 4: Simplify right side
   12,845.50x = 369,245,048.06
5. Step 5: Solve for x
   x = 369,245,048.06/12,845.50
6. Step 6: Final answer
   x = 28,745.09