Finding the Third Proportional to 10,320 and 11,170.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,320 : 11,170.50 = 11,170.50 : x
2. Step 2: Convert to fraction form
   10,320/11,170.50 = 11,170.50/x
3. Step 3: Cross multiply
   10,320x = 11,170.50 × 11,170.50
4. Step 4: Simplify right side
   10,320x = 124,780,070.25
5. Step 5: Solve for x
   x = 124,780,070.25/10,320
6. Step 6: Final answer
   x = 12,091.09