Finding the Third Proportional to 87,820 and 188,956

Step by Step Solution

1. Step 1: Write the proportion equation
   87,820 : 188,956 = 188,956 : x
2. Step 2: Convert to fraction form
   87,820/188,956 = 188,956/x
3. Step 3: Cross multiply
   87,820x = 188,956 × 188,956
4. Step 4: Simplify right side
   87,820x = 35,704,369,936
5. Step 5: Solve for x
   x = 35,704,369,936/87,820
6. Step 6: Final answer
   x = 406,563.08