Finding the Third Proportional to 10,424 and 11,900

Step by Step Solution

1. Step 1: Write the proportion equation
   10,424 : 11,900 = 11,900 : x
2. Step 2: Convert to fraction form
   10,424/11,900 = 11,900/x
3. Step 3: Cross multiply
   10,424x = 11,900 × 11,900
4. Step 4: Simplify right side
   10,424x = 141,610,000
5. Step 5: Solve for x
   x = 141,610,000/10,424
6. Step 6: Final answer
   x = 13,585.00