Finding the Third Proportional to 6,890 and 10,172

Step by Step Solution

1. Step 1: Write the proportion equation
   6,890 : 10,172 = 10,172 : x
2. Step 2: Convert to fraction form
   6,890/10,172 = 10,172/x
3. Step 3: Cross multiply
   6,890x = 10,172 × 10,172
4. Step 4: Simplify right side
   6,890x = 103,469,584
5. Step 5: Solve for x
   x = 103,469,584/6,890
6. Step 6: Final answer
   x = 15,017.36