Finding the Third Proportional to 394,576.50 and 869,586

Step by Step Solution

1. Step 1: Write the proportion equation
   394,576.50 : 869,586 = 869,586 : x
2. Step 2: Convert to fraction form
   394,576.50/869,586 = 869,586/x
3. Step 3: Cross multiply
   394,576.50x = 869,586 × 869,586
4. Step 4: Simplify right side
   394,576.50x = 756,179,811,396
5. Step 5: Solve for x
   x = 756,179,811,396/394,576.50
6. Step 6: Final answer
   x = 1,916,433.98