Finding the Third Proportional to 12,881.88 and 20,491.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,881.88 : 20,491.69 = 20,491.69 : x
2. Step 2: Convert to fraction form
   12,881.88/20,491.69 = 20,491.69/x
3. Step 3: Cross multiply
   12,881.88x = 20,491.69 × 20,491.69
4. Step 4: Simplify right side
   12,881.88x = 419,909,256.60
5. Step 5: Solve for x
   x = 419,909,256.60/12,881.88
6. Step 6: Final answer
   x = 32,596.91