Finding the Third Proportional to 3,297.50 and 7,139

Step by Step Solution

1. Step 1: Write the proportion equation
   3,297.50 : 7,139 = 7,139 : x
2. Step 2: Convert to fraction form
   3,297.50/7,139 = 7,139/x
3. Step 3: Cross multiply
   3,297.50x = 7,139 × 7,139
4. Step 4: Simplify right side
   3,297.50x = 50,965,321
5. Step 5: Solve for x
   x = 50,965,321/3,297.50
6. Step 6: Final answer
   x = 15,455.75