Finding the Third Proportional to 12,570 and 19,015.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,570 : 19,015.50 = 19,015.50 : x
2. Step 2: Convert to fraction form
   12,570/19,015.50 = 19,015.50/x
3. Step 3: Cross multiply
   12,570x = 19,015.50 × 19,015.50
4. Step 4: Simplify right side
   12,570x = 361,589,240.25
5. Step 5: Solve for x
   x = 361,589,240.25/12,570
6. Step 6: Final answer
   x = 28,766.05