Finding the Third Proportional to 12,956.50 and 20,007.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,956.50 : 20,007.38 = 20,007.38 : x
2. Step 2: Convert to fraction form
   12,956.50/20,007.38 = 20,007.38/x
3. Step 3: Cross multiply
   12,956.50x = 20,007.38 × 20,007.38
4. Step 4: Simplify right side
   12,956.50x = 400,295,054.39
5. Step 5: Solve for x
   x = 400,295,054.39/12,956.50
6. Step 6: Final answer
   x = 30,895.31