Finding the Third Proportional to 158,916 and 330,900

Step by Step Solution

1. Step 1: Write the proportion equation
   158,916 : 330,900 = 330,900 : x
2. Step 2: Convert to fraction form
   158,916/330,900 = 330,900/x
3. Step 3: Cross multiply
   158,916x = 330,900 × 330,900
4. Step 4: Simplify right side
   158,916x = 109,494,810,000
5. Step 5: Solve for x
   x = 109,494,810,000/158,916
6. Step 6: Final answer
   x = 689,010.61