Finding the Third Proportional to 9,172 and 13,126

Step by Step Solution

1. Step 1: Write the proportion equation
   9,172 : 13,126 = 13,126 : x
2. Step 2: Convert to fraction form
   9,172/13,126 = 13,126/x
3. Step 3: Cross multiply
   9,172x = 13,126 × 13,126
4. Step 4: Simplify right side
   9,172x = 172,291,876
5. Step 5: Solve for x
   x = 172,291,876/9,172
6. Step 6: Final answer
   x = 18,784.55