Finding the Third Proportional to 2,603.39 and 5,303.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.39 : 5,303.60 = 5,303.60 : x
2. Step 2: Convert to fraction form
   2,603.39/5,303.60 = 5,303.60/x
3. Step 3: Cross multiply
   2,603.39x = 5,303.60 × 5,303.60
4. Step 4: Simplify right side
   2,603.39x = 28,128,189.53
5. Step 5: Solve for x
   x = 28,128,189.53/2,603.39
6. Step 6: Final answer
   x = 10,804.44