Finding the Third Proportional to 8,358 and 13,019

Step by Step Solution

1. Step 1: Write the proportion equation
   8,358 : 13,019 = 13,019 : x
2. Step 2: Convert to fraction form
   8,358/13,019 = 13,019/x
3. Step 3: Cross multiply
   8,358x = 13,019 × 13,019
4. Step 4: Simplify right side
   8,358x = 169,494,361
5. Step 5: Solve for x
   x = 169,494,361/8,358
6. Step 6: Final answer
   x = 20,279.30