Finding the Third Proportional to 394,510.50 and 862,830

Step by Step Solution

1. Step 1: Write the proportion equation
   394,510.50 : 862,830 = 862,830 : x
2. Step 2: Convert to fraction form
   394,510.50/862,830 = 862,830/x
3. Step 3: Cross multiply
   394,510.50x = 862,830 × 862,830
4. Step 4: Simplify right side
   394,510.50x = 744,475,608,900
5. Step 5: Solve for x
   x = 744,475,608,900/394,510.50
6. Step 6: Final answer
   x = 1,887,086.93