Finding the Third Proportional to 12,436 and 18,710

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436 : 18,710 = 18,710 : x
2. Step 2: Convert to fraction form
   12,436/18,710 = 18,710/x
3. Step 3: Cross multiply
   12,436x = 18,710 × 18,710
4. Step 4: Simplify right side
   12,436x = 350,064,100
5. Step 5: Solve for x
   x = 350,064,100/12,436
6. Step 6: Final answer
   x = 28,149.25