Finding the Third Proportional to 13,058 and 21,020

Step by Step Solution

1. Step 1: Write the proportion equation
   13,058 : 21,020 = 21,020 : x
2. Step 2: Convert to fraction form
   13,058/21,020 = 21,020/x
3. Step 3: Cross multiply
   13,058x = 21,020 × 21,020
4. Step 4: Simplify right side
   13,058x = 441,840,400
5. Step 5: Solve for x
   x = 441,840,400/13,058
6. Step 6: Final answer
   x = 33,836.76