Finding the Third Proportional to 87,806 and 189,651.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,806 : 189,651.50 = 189,651.50 : x
2. Step 2: Convert to fraction form
   87,806/189,651.50 = 189,651.50/x
3. Step 3: Cross multiply
   87,806x = 189,651.50 × 189,651.50
4. Step 4: Simplify right side
   87,806x = 35,967,691,452.25
5. Step 5: Solve for x
   x = 35,967,691,452.25/87,806
6. Step 6: Final answer
   x = 409,626.81