Finding the Third Proportional to 13,708.83 and 20,664.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,708.83 : 20,664.49 = 20,664.49 : x
2. Step 2: Convert to fraction form
   13,708.83/20,664.49 = 20,664.49/x
3. Step 3: Cross multiply
   13,708.83x = 20,664.49 × 20,664.49
4. Step 4: Simplify right side
   13,708.83x = 427,021,237.37
5. Step 5: Solve for x
   x = 427,021,237.37/13,708.83
6. Step 6: Final answer
   x = 31,149.36