Finding the Third Proportional to 13,381 and 30,980

Step by Step Solution

1. Step 1: Write the proportion equation
   13,381 : 30,980 = 30,980 : x
2. Step 2: Convert to fraction form
   13,381/30,980 = 30,980/x
3. Step 3: Cross multiply
   13,381x = 30,980 × 30,980
4. Step 4: Simplify right side
   13,381x = 959,760,400
5. Step 5: Solve for x
   x = 959,760,400/13,381
6. Step 6: Final answer
   x = 71,725.61