Finding the Third Proportional to 5,422.50 and 12,867.75

Step by Step Solution

1. Step 1: Write the proportion equation
   5,422.50 : 12,867.75 = 12,867.75 : x
2. Step 2: Convert to fraction form
   5,422.50/12,867.75 = 12,867.75/x
3. Step 3: Cross multiply
   5,422.50x = 12,867.75 × 12,867.75
4. Step 4: Simplify right side
   5,422.50x = 165,578,990.06
5. Step 5: Solve for x
   x = 165,578,990.06/5,422.50
6. Step 6: Final answer
   x = 30,535.54