Finding the Third Proportional to 9,072 and 13,871.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,072 : 13,871.25 = 13,871.25 : x
2. Step 2: Convert to fraction form
   9,072/13,871.25 = 13,871.25/x
3. Step 3: Cross multiply
   9,072x = 13,871.25 × 13,871.25
4. Step 4: Simplify right side
   9,072x = 192,411,576.56
5. Step 5: Solve for x
   x = 192,411,576.56/9,072
6. Step 6: Final answer
   x = 21,209.39