Finding the Third Proportional to 2,398 and 5,187.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,398 : 5,187.50 = 5,187.50 : x
2. Step 2: Convert to fraction form
   2,398/5,187.50 = 5,187.50/x
3. Step 3: Cross multiply
   2,398x = 5,187.50 × 5,187.50
4. Step 4: Simplify right side
   2,398x = 26,910,156.25
5. Step 5: Solve for x
   x = 26,910,156.25/2,398
6. Step 6: Final answer
   x = 11,221.92