Finding the Third Proportional to 86,616 and 188,028

Step by Step Solution

1. Step 1: Write the proportion equation
   86,616 : 188,028 = 188,028 : x
2. Step 2: Convert to fraction form
   86,616/188,028 = 188,028/x
3. Step 3: Cross multiply
   86,616x = 188,028 × 188,028
4. Step 4: Simplify right side
   86,616x = 35,354,528,784
5. Step 5: Solve for x
   x = 35,354,528,784/86,616
6. Step 6: Final answer
   x = 408,175.50