Finding the Third Proportional to 389,767.50 and 854,014.50

Step by Step Solution

1. Step 1: Write the proportion equation
   389,767.50 : 854,014.50 = 854,014.50 : x
2. Step 2: Convert to fraction form
   389,767.50/854,014.50 = 854,014.50/x
3. Step 3: Cross multiply
   389,767.50x = 854,014.50 × 854,014.50
4. Step 4: Simplify right side
   389,767.50x = 729,340,766,210.25
5. Step 5: Solve for x
   x = 729,340,766,210.25/389,767.50
6. Step 6: Final answer
   x = 1,871,220.06