Finding the Third Proportional to 17,556.75 and 18,928.69

Step by Step Solution

1. Step 1: Write the proportion equation
   17,556.75 : 18,928.69 = 18,928.69 : x
2. Step 2: Convert to fraction form
   17,556.75/18,928.69 = 18,928.69/x
3. Step 3: Cross multiply
   17,556.75x = 18,928.69 × 18,928.69
4. Step 4: Simplify right side
   17,556.75x = 358,295,210.47
5. Step 5: Solve for x
   x = 358,295,210.47/17,556.75
6. Step 6: Final answer
   x = 20,407.83