Finding the Third Proportional to 9,964 and 14,172

Step by Step Solution

1. Step 1: Write the proportion equation
   9,964 : 14,172 = 14,172 : x
2. Step 2: Convert to fraction form
   9,964/14,172 = 14,172/x
3. Step 3: Cross multiply
   9,964x = 14,172 × 14,172
4. Step 4: Simplify right side
   9,964x = 200,845,584
5. Step 5: Solve for x
   x = 200,845,584/9,964
6. Step 6: Final answer
   x = 20,157.12