Finding the Third Proportional to 426,586.50 and 905,661

Step by Step Solution

1. Step 1: Write the proportion equation
   426,586.50 : 905,661 = 905,661 : x
2. Step 2: Convert to fraction form
   426,586.50/905,661 = 905,661/x
3. Step 3: Cross multiply
   426,586.50x = 905,661 × 905,661
4. Step 4: Simplify right side
   426,586.50x = 820,221,846,921
5. Step 5: Solve for x
   x = 820,221,846,921/426,586.50
6. Step 6: Final answer
   x = 1,922,756.22