Finding the Third Proportional to 7,158.25 and 10,425.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,158.25 : 10,425.25 = 10,425.25 : x
2. Step 2: Convert to fraction form
   7,158.25/10,425.25 = 10,425.25/x
3. Step 3: Cross multiply
   7,158.25x = 10,425.25 × 10,425.25
4. Step 4: Simplify right side
   7,158.25x = 108,685,837.56
5. Step 5: Solve for x
   x = 108,685,837.56/7,158.25
6. Step 6: Final answer
   x = 15,183.30