Finding the Third Proportional to 577,821.50 and 898,204

Step by Step Solution

1. Step 1: Write the proportion equation
   577,821.50 : 898,204 = 898,204 : x
2. Step 2: Convert to fraction form
   577,821.50/898,204 = 898,204/x
3. Step 3: Cross multiply
   577,821.50x = 898,204 × 898,204
4. Step 4: Simplify right side
   577,821.50x = 806,770,425,616
5. Step 5: Solve for x
   x = 806,770,425,616/577,821.50
6. Step 6: Final answer
   x = 1,396,227.77