Finding the Third Proportional to 19,871 and 30,980

Step by Step Solution

1. Step 1: Write the proportion equation
   19,871 : 30,980 = 30,980 : x
2. Step 2: Convert to fraction form
   19,871/30,980 = 30,980/x
3. Step 3: Cross multiply
   19,871x = 30,980 × 30,980
4. Step 4: Simplify right side
   19,871x = 959,760,400
5. Step 5: Solve for x
   x = 959,760,400/19,871
6. Step 6: Final answer
   x = 48,299.55