Finding the Third Proportional to 8,513 and 12,949

Step by Step Solution

1. Step 1: Write the proportion equation
   8,513 : 12,949 = 12,949 : x
2. Step 2: Convert to fraction form
   8,513/12,949 = 12,949/x
3. Step 3: Cross multiply
   8,513x = 12,949 × 12,949
4. Step 4: Simplify right side
   8,513x = 167,676,601
5. Step 5: Solve for x
   x = 167,676,601/8,513
6. Step 6: Final answer
   x = 19,696.53