Finding the Third Proportional to 86,028.75 and 188,581.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,028.75 : 188,581.50 = 188,581.50 : x
2. Step 2: Convert to fraction form
   86,028.75/188,581.50 = 188,581.50/x
3. Step 3: Cross multiply
   86,028.75x = 188,581.50 × 188,581.50
4. Step 4: Simplify right side
   86,028.75x = 35,562,982,142.25
5. Step 5: Solve for x
   x = 35,562,982,142.25/86,028.75
6. Step 6: Final answer
   x = 413,384.85