Finding the Third Proportional to 8,667.69 and 12,385.75

Step by Step Solution

1. Step 1: Write the proportion equation
   8,667.69 : 12,385.75 = 12,385.75 : x
2. Step 2: Convert to fraction form
   8,667.69/12,385.75 = 12,385.75/x
3. Step 3: Cross multiply
   8,667.69x = 12,385.75 × 12,385.75
4. Step 4: Simplify right side
   8,667.69x = 153,406,803.06
5. Step 5: Solve for x
   x = 153,406,803.06/8,667.69
6. Step 6: Final answer
   x = 17,698.70