Finding the Third Proportional to 371,329 and 557,810

Step by Step Solution

1. Step 1: Write the proportion equation
   371,329 : 557,810 = 557,810 : x
2. Step 2: Convert to fraction form
   371,329/557,810 = 557,810/x
3. Step 3: Cross multiply
   371,329x = 557,810 × 557,810
4. Step 4: Simplify right side
   371,329x = 311,151,996,100
5. Step 5: Solve for x
   x = 311,151,996,100/371,329
6. Step 6: Final answer
   x = 837,941.55