Finding the Third Proportional to 87,358.50 and 186,156

Step by Step Solution

1. Step 1: Write the proportion equation
   87,358.50 : 186,156 = 186,156 : x
2. Step 2: Convert to fraction form
   87,358.50/186,156 = 186,156/x
3. Step 3: Cross multiply
   87,358.50x = 186,156 × 186,156
4. Step 4: Simplify right side
   87,358.50x = 34,654,056,336
5. Step 5: Solve for x
   x = 34,654,056,336/87,358.50
6. Step 6: Final answer
   x = 396,687.86