Finding the Third Proportional to 3,603.50 and 7,385.75

Step by Step Solution

1. Step 1: Write the proportion equation
   3,603.50 : 7,385.75 = 7,385.75 : x
2. Step 2: Convert to fraction form
   3,603.50/7,385.75 = 7,385.75/x
3. Step 3: Cross multiply
   3,603.50x = 7,385.75 × 7,385.75
4. Step 4: Simplify right side
   3,603.50x = 54,549,303.06
5. Step 5: Solve for x
   x = 54,549,303.06/3,603.50
6. Step 6: Final answer
   x = 15,137.87