Finding the Third Proportional to 262,516.50 and 396,180

Step by Step Solution

1. Step 1: Write the proportion equation
   262,516.50 : 396,180 = 396,180 : x
2. Step 2: Convert to fraction form
   262,516.50/396,180 = 396,180/x
3. Step 3: Cross multiply
   262,516.50x = 396,180 × 396,180
4. Step 4: Simplify right side
   262,516.50x = 156,958,592,400
5. Step 5: Solve for x
   x = 156,958,592,400/262,516.50
6. Step 6: Final answer
   x = 597,899.91