Finding the Third Proportional to 12,930 and 20,019

Step by Step Solution

1. Step 1: Write the proportion equation
   12,930 : 20,019 = 20,019 : x
2. Step 2: Convert to fraction form
   12,930/20,019 = 20,019/x
3. Step 3: Cross multiply
   12,930x = 20,019 × 20,019
4. Step 4: Simplify right side
   12,930x = 400,760,361
5. Step 5: Solve for x
   x = 400,760,361/12,930
6. Step 6: Final answer
   x = 30,994.61