Finding the Third Proportional to 9,886 and 12,984

Step by Step Solution

1. Step 1: Write the proportion equation
   9,886 : 12,984 = 12,984 : x
2. Step 2: Convert to fraction form
   9,886/12,984 = 12,984/x
3. Step 3: Cross multiply
   9,886x = 12,984 × 12,984
4. Step 4: Simplify right side
   9,886x = 168,584,256
5. Step 5: Solve for x
   x = 168,584,256/9,886
6. Step 6: Final answer
   x = 17,052.83