Finding the Third Proportional to 86,085.50 and 186,469

Step by Step Solution

1. Step 1: Write the proportion equation
   86,085.50 : 186,469 = 186,469 : x
2. Step 2: Convert to fraction form
   86,085.50/186,469 = 186,469/x
3. Step 3: Cross multiply
   86,085.50x = 186,469 × 186,469
4. Step 4: Simplify right side
   86,085.50x = 34,770,687,961
5. Step 5: Solve for x
   x = 34,770,687,961/86,085.50
6. Step 6: Final answer
   x = 403,908.76