Finding the Third Proportional to 8,316 and 12,086.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,316 : 12,086.25 = 12,086.25 : x
2. Step 2: Convert to fraction form
   8,316/12,086.25 = 12,086.25/x
3. Step 3: Cross multiply
   8,316x = 12,086.25 × 12,086.25
4. Step 4: Simplify right side
   8,316x = 146,077,439.06
5. Step 5: Solve for x
   x = 146,077,439.06/8,316
6. Step 6: Final answer
   x = 17,565.83