Finding the Third Proportional to 2,603.50 and 3,886.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.50 : 3,886.75 = 3,886.75 : x
2. Step 2: Convert to fraction form
   2,603.50/3,886.75 = 3,886.75/x
3. Step 3: Cross multiply
   2,603.50x = 3,886.75 × 3,886.75
4. Step 4: Simplify right side
   2,603.50x = 15,106,825.56
5. Step 5: Solve for x
   x = 15,106,825.56/2,603.50
6. Step 6: Final answer
   x = 5,802.51