Finding the Third Proportional to 394,574 and 869,580.50

Step by Step Solution

1. Step 1: Write the proportion equation
   394,574 : 869,580.50 = 869,580.50 : x
2. Step 2: Convert to fraction form
   394,574/869,580.50 = 869,580.50/x
3. Step 3: Cross multiply
   394,574x = 869,580.50 × 869,580.50
4. Step 4: Simplify right side
   394,574x = 756,170,245,980.25
5. Step 5: Solve for x
   x = 756,170,245,980.25/394,574
6. Step 6: Final answer
   x = 1,916,421.88