Finding the Third Proportional to 371,320 and 557,801

Step by Step Solution

1. Step 1: Write the proportion equation
   371,320 : 557,801 = 557,801 : x
2. Step 2: Convert to fraction form
   371,320/557,801 = 557,801/x
3. Step 3: Cross multiply
   371,320x = 557,801 × 557,801
4. Step 4: Simplify right side
   371,320x = 311,141,955,601
5. Step 5: Solve for x
   x = 311,141,955,601/371,320
6. Step 6: Final answer
   x = 837,934.82