Finding the Third Proportional to 87,168 and 188,784

Step by Step Solution

1. Step 1: Write the proportion equation
   87,168 : 188,784 = 188,784 : x
2. Step 2: Convert to fraction form
   87,168/188,784 = 188,784/x
3. Step 3: Cross multiply
   87,168x = 188,784 × 188,784
4. Step 4: Simplify right side
   87,168x = 35,639,398,656
5. Step 5: Solve for x
   x = 35,639,398,656/87,168
6. Step 6: Final answer
   x = 408,858.74