Finding the Third Proportional to 89,108 and 189,868

Step by Step Solution

1. Step 1: Write the proportion equation
   89,108 : 189,868 = 189,868 : x
2. Step 2: Convert to fraction form
   89,108/189,868 = 189,868/x
3. Step 3: Cross multiply
   89,108x = 189,868 × 189,868
4. Step 4: Simplify right side
   89,108x = 36,049,857,424
5. Step 5: Solve for x
   x = 36,049,857,424/89,108
6. Step 6: Final answer
   x = 404,563.65