Finding the Third Proportional to 12,857.25 and 19,285.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,857.25 : 19,285.50 = 19,285.50 : x
2. Step 2: Convert to fraction form
   12,857.25/19,285.50 = 19,285.50/x
3. Step 3: Cross multiply
   12,857.25x = 19,285.50 × 19,285.50
4. Step 4: Simplify right side
   12,857.25x = 371,930,510.25
5. Step 5: Solve for x
   x = 371,930,510.25/12,857.25
6. Step 6: Final answer
   x = 28,927.69