Finding the Third Proportional to 11,871.50 and 25,390

Step by Step Solution

1. Step 1: Write the proportion equation
   11,871.50 : 25,390 = 25,390 : x
2. Step 2: Convert to fraction form
   11,871.50/25,390 = 25,390/x
3. Step 3: Cross multiply
   11,871.50x = 25,390 × 25,390
4. Step 4: Simplify right side
   11,871.50x = 644,652,100
5. Step 5: Solve for x
   x = 644,652,100/11,871.50
6. Step 6: Final answer
   x = 54,302.50