Finding the Third Proportional to 8,819.63 and 13,671.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,819.63 : 13,671.38 = 13,671.38 : x
2. Step 2: Convert to fraction form
   8,819.63/13,671.38 = 13,671.38/x
3. Step 3: Cross multiply
   8,819.63x = 13,671.38 × 13,671.38
4. Step 4: Simplify right side
   8,819.63x = 186,906,494.39
5. Step 5: Solve for x
   x = 186,906,494.39/8,819.63
6. Step 6: Final answer
   x = 21,192.11