Finding the Third Proportional to 389,114 and 852,040

Step by Step Solution

1. Step 1: Write the proportion equation
   389,114 : 852,040 = 852,040 : x
2. Step 2: Convert to fraction form
   389,114/852,040 = 852,040/x
3. Step 3: Cross multiply
   389,114x = 852,040 × 852,040
4. Step 4: Simplify right side
   389,114x = 725,972,161,600
5. Step 5: Solve for x
   x = 725,972,161,600/389,114
6. Step 6: Final answer
   x = 1,865,705.58