Finding the Third Proportional to 8,581 and 12,019.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,581 : 12,019.50 = 12,019.50 : x
2. Step 2: Convert to fraction form
   8,581/12,019.50 = 12,019.50/x
3. Step 3: Cross multiply
   8,581x = 12,019.50 × 12,019.50
4. Step 4: Simplify right side
   8,581x = 144,468,380.25
5. Step 5: Solve for x
   x = 144,468,380.25/8,581
6. Step 6: Final answer
   x = 16,835.84