Finding the Third Proportional to 9,145.41 and 18,928.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,145.41 : 18,928.69 = 18,928.69 : x
2. Step 2: Convert to fraction form
   9,145.41/18,928.69 = 18,928.69/x
3. Step 3: Cross multiply
   9,145.41x = 18,928.69 × 18,928.69
4. Step 4: Simplify right side
   9,145.41x = 358,295,210.47
5. Step 5: Solve for x
   x = 358,295,210.47/9,145.41
6. Step 6: Final answer
   x = 39,177.62