Finding the Third Proportional to 407,928 and 587,538

Step by Step Solution

1. Step 1: Write the proportion equation
   407,928 : 587,538 = 587,538 : x
2. Step 2: Convert to fraction form
   407,928/587,538 = 587,538/x
3. Step 3: Cross multiply
   407,928x = 587,538 × 587,538
4. Step 4: Simplify right side
   407,928x = 345,200,901,444
5. Step 5: Solve for x
   x = 345,200,901,444/407,928
6. Step 6: Final answer
   x = 846,229.98