Finding the Third Proportional to 9,900 and 11,316

Step by Step Solution

1. Step 1: Write the proportion equation
   9,900 : 11,316 = 11,316 : x
2. Step 2: Convert to fraction form
   9,900/11,316 = 11,316/x
3. Step 3: Cross multiply
   9,900x = 11,316 × 11,316
4. Step 4: Simplify right side
   9,900x = 128,051,856
5. Step 5: Solve for x
   x = 128,051,856/9,900
6. Step 6: Final answer
   x = 12,934.53