Finding the Third Proportional to 262,465.50 and 398,892

Step by Step Solution

1. Step 1: Write the proportion equation
   262,465.50 : 398,892 = 398,892 : x
2. Step 2: Convert to fraction form
   262,465.50/398,892 = 398,892/x
3. Step 3: Cross multiply
   262,465.50x = 398,892 × 398,892
4. Step 4: Simplify right side
   262,465.50x = 159,114,827,664
5. Step 5: Solve for x
   x = 159,114,827,664/262,465.50
6. Step 6: Final answer
   x = 606,231.40