Finding the Third Proportional to 8,571 and 12,947.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,571 : 12,947.50 = 12,947.50 : x
2. Step 2: Convert to fraction form
   8,571/12,947.50 = 12,947.50/x
3. Step 3: Cross multiply
   8,571x = 12,947.50 × 12,947.50
4. Step 4: Simplify right side
   8,571x = 167,637,756.25
5. Step 5: Solve for x
   x = 167,637,756.25/8,571
6. Step 6: Final answer
   x = 19,558.72