Finding the Third Proportional to 8,553.94 and 13,664.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,553.94 : 13,664.81 = 13,664.81 : x
2. Step 2: Convert to fraction form
   8,553.94/13,664.81 = 13,664.81/x
3. Step 3: Cross multiply
   8,553.94x = 13,664.81 × 13,664.81
4. Step 4: Simplify right side
   8,553.94x = 186,727,100.66
5. Step 5: Solve for x
   x = 186,727,100.66/8,553.94
6. Step 6: Final answer
   x = 21,829.37