Finding the Third Proportional to 7,080 and 10,603.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,080 : 10,603.50 = 10,603.50 : x
2. Step 2: Convert to fraction form
   7,080/10,603.50 = 10,603.50/x
3. Step 3: Cross multiply
   7,080x = 10,603.50 × 10,603.50
4. Step 4: Simplify right side
   7,080x = 112,434,212.25
5. Step 5: Solve for x
   x = 112,434,212.25/7,080
6. Step 6: Final answer
   x = 15,880.54