Finding the Third Proportional to 86,324.50 and 188,660

Step by Step Solution

1. Step 1: Write the proportion equation
   86,324.50 : 188,660 = 188,660 : x
2. Step 2: Convert to fraction form
   86,324.50/188,660 = 188,660/x
3. Step 3: Cross multiply
   86,324.50x = 188,660 × 188,660
4. Step 4: Simplify right side
   86,324.50x = 35,592,595,600
5. Step 5: Solve for x
   x = 35,592,595,600/86,324.50
6. Step 6: Final answer
   x = 412,311.63