Finding the Third Proportional to 12,436 and 15,772

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436 : 15,772 = 15,772 : x
2. Step 2: Convert to fraction form
   12,436/15,772 = 15,772/x
3. Step 3: Cross multiply
   12,436x = 15,772 × 15,772
4. Step 4: Simplify right side
   12,436x = 248,755,984
5. Step 5: Solve for x
   x = 248,755,984/12,436
6. Step 6: Final answer
   x = 20,002.89