Finding the Third Proportional to 5,725.50 and 8,667.75

Step by Step Solution

1. Step 1: Write the proportion equation
   5,725.50 : 8,667.75 = 8,667.75 : x
2. Step 2: Convert to fraction form
   5,725.50/8,667.75 = 8,667.75/x
3. Step 3: Cross multiply
   5,725.50x = 8,667.75 × 8,667.75
4. Step 4: Simplify right side
   5,725.50x = 75,129,890.06
5. Step 5: Solve for x
   x = 75,129,890.06/5,725.50
6. Step 6: Final answer
   x = 13,121.98