Finding the Third Proportional to 8,470 and 12,949

Step by Step Solution

1. Step 1: Write the proportion equation
   8,470 : 12,949 = 12,949 : x
2. Step 2: Convert to fraction form
   8,470/12,949 = 12,949/x
3. Step 3: Cross multiply
   8,470x = 12,949 × 12,949
4. Step 4: Simplify right side
   8,470x = 167,676,601
5. Step 5: Solve for x
   x = 167,676,601/8,470
6. Step 6: Final answer
   x = 19,796.53