Finding the Third Proportional to 15,405 and 23,109

Step by Step Solution

1. Step 1: Write the proportion equation
   15,405 : 23,109 = 23,109 : x
2. Step 2: Convert to fraction form
   15,405/23,109 = 23,109/x
3. Step 3: Cross multiply
   15,405x = 23,109 × 23,109
4. Step 4: Simplify right side
   15,405x = 534,025,881
5. Step 5: Solve for x
   x = 534,025,881/15,405
6. Step 6: Final answer
   x = 34,665.75