Finding the Third Proportional to 128,806.50 and 188,595

Step by Step Solution

1. Step 1: Write the proportion equation
   128,806.50 : 188,595 = 188,595 : x
2. Step 2: Convert to fraction form
   128,806.50/188,595 = 188,595/x
3. Step 3: Cross multiply
   128,806.50x = 188,595 × 188,595
4. Step 4: Simplify right side
   128,806.50x = 35,568,074,025
5. Step 5: Solve for x
   x = 35,568,074,025/128,806.50
6. Step 6: Final answer
   x = 276,135.71