Finding the Third Proportional to 15,109 and 19,672

Step by Step Solution

1. Step 1: Write the proportion equation
   15,109 : 19,672 = 19,672 : x
2. Step 2: Convert to fraction form
   15,109/19,672 = 19,672/x
3. Step 3: Cross multiply
   15,109x = 19,672 × 19,672
4. Step 4: Simplify right side
   15,109x = 386,987,584
5. Step 5: Solve for x
   x = 386,987,584/15,109
6. Step 6: Final answer
   x = 25,613.05