Finding the Third Proportional to 8,216.44 and 12,529.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,216.44 : 12,529.69 = 12,529.69 : x
2. Step 2: Convert to fraction form
   8,216.44/12,529.69 = 12,529.69/x
3. Step 3: Cross multiply
   8,216.44x = 12,529.69 × 12,529.69
4. Step 4: Simplify right side
   8,216.44x = 156,993,068.85
5. Step 5: Solve for x
   x = 156,993,068.85/8,216.44
6. Step 6: Final answer
   x = 19,107.19