Finding the Third Proportional to 13,172 and 19,886

Step by Step Solution

1. Step 1: Write the proportion equation
   13,172 : 19,886 = 19,886 : x
2. Step 2: Convert to fraction form
   13,172/19,886 = 19,886/x
3. Step 3: Cross multiply
   13,172x = 19,886 × 19,886
4. Step 4: Simplify right side
   13,172x = 395,452,996
5. Step 5: Solve for x
   x = 395,452,996/13,172
6. Step 6: Final answer
   x = 30,022.24