Finding the Third Proportional to 3,603 and 7,761.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,603 : 7,761.50 = 7,761.50 : x
2. Step 2: Convert to fraction form
   3,603/7,761.50 = 7,761.50/x
3. Step 3: Cross multiply
   3,603x = 7,761.50 × 7,761.50
4. Step 4: Simplify right side
   3,603x = 60,240,882.25
5. Step 5: Solve for x
   x = 60,240,882.25/3,603
6. Step 6: Final answer
   x = 16,719.65