Finding the Third Proportional to 87,391.50 and 186,222

Step by Step Solution

1. Step 1: Write the proportion equation
   87,391.50 : 186,222 = 186,222 : x
2. Step 2: Convert to fraction form
   87,391.50/186,222 = 186,222/x
3. Step 3: Cross multiply
   87,391.50x = 186,222 × 186,222
4. Step 4: Simplify right side
   87,391.50x = 34,678,633,284
5. Step 5: Solve for x
   x = 34,678,633,284/87,391.50
6. Step 6: Final answer
   x = 396,819.29