Finding the Third Proportional to 12,955 and 20,005

Step by Step Solution

1. Step 1: Write the proportion equation
   12,955 : 20,005 = 20,005 : x
2. Step 2: Convert to fraction form
   12,955/20,005 = 20,005/x
3. Step 3: Cross multiply
   12,955x = 20,005 × 20,005
4. Step 4: Simplify right side
   12,955x = 400,200,025
5. Step 5: Solve for x
   x = 400,200,025/12,955
6. Step 6: Final answer
   x = 30,891.55