Finding the Third Proportional to 9,405 and 13,150.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,405 : 13,150.50 = 13,150.50 : x
2. Step 2: Convert to fraction form
   9,405/13,150.50 = 13,150.50/x
3. Step 3: Cross multiply
   9,405x = 13,150.50 × 13,150.50
4. Step 4: Simplify right side
   9,405x = 172,935,650.25
5. Step 5: Solve for x
   x = 172,935,650.25/9,405
6. Step 6: Final answer
   x = 18,387.63