Finding the Third Proportional to 87,818 and 188,974

Step by Step Solution

1. Step 1: Write the proportion equation
   87,818 : 188,974 = 188,974 : x
2. Step 2: Convert to fraction form
   87,818/188,974 = 188,974/x
3. Step 3: Cross multiply
   87,818x = 188,974 × 188,974
4. Step 4: Simplify right side
   87,818x = 35,711,172,676
5. Step 5: Solve for x
   x = 35,711,172,676/87,818
6. Step 6: Final answer
   x = 406,649.81