Finding the Third Proportional to 162,731 and 333,390

Step by Step Solution

1. Step 1: Write the proportion equation
   162,731 : 333,390 = 333,390 : x
2. Step 2: Convert to fraction form
   162,731/333,390 = 333,390/x
3. Step 3: Cross multiply
   162,731x = 333,390 × 333,390
4. Step 4: Simplify right side
   162,731x = 111,148,892,100
5. Step 5: Solve for x
   x = 111,148,892,100/162,731
6. Step 6: Final answer
   x = 683,022.24