Finding the Third Proportional to 9,021.56 and 12,995.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,021.56 : 12,995.25 = 12,995.25 : x
2. Step 2: Convert to fraction form
   9,021.56/12,995.25 = 12,995.25/x
3. Step 3: Cross multiply
   9,021.56x = 12,995.25 × 12,995.25
4. Step 4: Simplify right side
   9,021.56x = 168,876,522.56
5. Step 5: Solve for x
   x = 168,876,522.56/9,021.56
6. Step 6: Final answer
   x = 18,719.21