Finding the Third Proportional to 162,590 and 342,892

Step by Step Solution

1. Step 1: Write the proportion equation
   162,590 : 342,892 = 342,892 : x
2. Step 2: Convert to fraction form
   162,590/342,892 = 342,892/x
3. Step 3: Cross multiply
   162,590x = 342,892 × 342,892
4. Step 4: Simplify right side
   162,590x = 117,574,923,664
5. Step 5: Solve for x
   x = 117,574,923,664/162,590
6. Step 6: Final answer
   x = 723,137.48