Finding the Third Proportional to 398,929.50 and 853,896

Step by Step Solution

1. Step 1: Write the proportion equation
   398,929.50 : 853,896 = 853,896 : x
2. Step 2: Convert to fraction form
   398,929.50/853,896 = 853,896/x
3. Step 3: Cross multiply
   398,929.50x = 853,896 × 853,896
4. Step 4: Simplify right side
   398,929.50x = 729,138,378,816
5. Step 5: Solve for x
   x = 729,138,378,816/398,929.50
6. Step 6: Final answer
   x = 1,827,737.43