Finding the Third Proportional to 3,131.25 and 7,280.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.25 : 7,280.63 = 7,280.63 : x
2. Step 2: Convert to fraction form
   3,131.25/7,280.63 = 7,280.63/x
3. Step 3: Cross multiply
   3,131.25x = 7,280.63 × 7,280.63
4. Step 4: Simplify right side
   3,131.25x = 53,007,500.39
5. Step 5: Solve for x
   x = 53,007,500.39/3,131.25
6. Step 6: Final answer
   x = 16,928.54