Finding the Third Proportional to 6,661 and 10,359.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,661 : 10,359.50 = 10,359.50 : x
2. Step 2: Convert to fraction form
   6,661/10,359.50 = 10,359.50/x
3. Step 3: Cross multiply
   6,661x = 10,359.50 × 10,359.50
4. Step 4: Simplify right side
   6,661x = 107,319,240.25
5. Step 5: Solve for x
   x = 107,319,240.25/6,661
6. Step 6: Final answer
   x = 16,111.58