Finding the Third Proportional to 8,328 and 13,279.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,328 : 13,279.50 = 13,279.50 : x
2. Step 2: Convert to fraction form
   8,328/13,279.50 = 13,279.50/x
3. Step 3: Cross multiply
   8,328x = 13,279.50 × 13,279.50
4. Step 4: Simplify right side
   8,328x = 176,345,120.25
5. Step 5: Solve for x
   x = 176,345,120.25/8,328
6. Step 6: Final answer
   x = 21,174.97