Finding the Third Proportional to 8,317.69 and 12,881.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,317.69 : 12,881.53 = 12,881.53 : x
2. Step 2: Convert to fraction form
   8,317.69/12,881.53 = 12,881.53/x
3. Step 3: Cross multiply
   8,317.69x = 12,881.53 × 12,881.53
4. Step 4: Simplify right side
   8,317.69x = 165,933,847.34
5. Step 5: Solve for x
   x = 165,933,847.34/8,317.69
6. Step 6: Final answer
   x = 19,949.52