Finding the Third Proportional to 405,379.50 and 888,591

Step by Step Solution

1. Step 1: Write the proportion equation
   405,379.50 : 888,591 = 888,591 : x
2. Step 2: Convert to fraction form
   405,379.50/888,591 = 888,591/x
3. Step 3: Cross multiply
   405,379.50x = 888,591 × 888,591
4. Step 4: Simplify right side
   405,379.50x = 789,593,965,281
5. Step 5: Solve for x
   x = 789,593,965,281/405,379.50
6. Step 6: Final answer
   x = 1,947,789.58