Finding the Third Proportional to 8,667.50 and 12,873

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.50 : 12,873 = 12,873 : x
2. Step 2: Convert to fraction form
   8,667.50/12,873 = 12,873/x
3. Step 3: Cross multiply
   8,667.50x = 12,873 × 12,873
4. Step 4: Simplify right side
   8,667.50x = 165,714,129
5. Step 5: Solve for x
   x = 165,714,129/8,667.50
6. Step 6: Final answer
   x = 19,119.02