Finding the Third Proportional to 394,086 and 611,459.50

Step by Step Solution

1. Step 1: Write the proportion equation
   394,086 : 611,459.50 = 611,459.50 : x
2. Step 2: Convert to fraction form
   394,086/611,459.50 = 611,459.50/x
3. Step 3: Cross multiply
   394,086x = 611,459.50 × 611,459.50
4. Step 4: Simplify right side
   394,086x = 373,882,720,140.25
5. Step 5: Solve for x
   x = 373,882,720,140.25/394,086
6. Step 6: Final answer
   x = 948,733.83