Finding the Third Proportional to 11,979.50 and 25,200.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,979.50 : 25,200.50 = 25,200.50 : x
2. Step 2: Convert to fraction form
   11,979.50/25,200.50 = 25,200.50/x
3. Step 3: Cross multiply
   11,979.50x = 25,200.50 × 25,200.50
4. Step 4: Simplify right side
   11,979.50x = 635,065,200.25
5. Step 5: Solve for x
   x = 635,065,200.25/11,979.50
6. Step 6: Final answer
   x = 53,012.66