Finding the Third Proportional to 3,667.78 and 8,007.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.78 : 8,007.61 = 8,007.61 : x
2. Step 2: Convert to fraction form
   3,667.78/8,007.61 = 8,007.61/x
3. Step 3: Cross multiply
   3,667.78x = 8,007.61 × 8,007.61
4. Step 4: Simplify right side
   3,667.78x = 64,121,807.90
5. Step 5: Solve for x
   x = 64,121,807.90/3,667.78
6. Step 6: Final answer
   x = 17,482.45