Finding the Third Proportional to 8,620 and 13,054

Step by Step Solution

1. Step 1: Write the proportion equation
   8,620 : 13,054 = 13,054 : x
2. Step 2: Convert to fraction form
   8,620/13,054 = 13,054/x
3. Step 3: Cross multiply
   8,620x = 13,054 × 13,054
4. Step 4: Simplify right side
   8,620x = 170,406,916
5. Step 5: Solve for x
   x = 170,406,916/8,620
6. Step 6: Final answer
   x = 19,768.78