Finding the Third Proportional to 12,607 and 20,980

Step by Step Solution

1. Step 1: Write the proportion equation
   12,607 : 20,980 = 20,980 : x
2. Step 2: Convert to fraction form
   12,607/20,980 = 20,980/x
3. Step 3: Cross multiply
   12,607x = 20,980 × 20,980
4. Step 4: Simplify right side
   12,607x = 440,160,400
5. Step 5: Solve for x
   x = 440,160,400/12,607
6. Step 6: Final answer
   x = 34,913.97