Finding the Third Proportional to 557,452.50 and 841,404

Step by Step Solution

1. Step 1: Write the proportion equation
   557,452.50 : 841,404 = 841,404 : x
2. Step 2: Convert to fraction form
   557,452.50/841,404 = 841,404/x
3. Step 3: Cross multiply
   557,452.50x = 841,404 × 841,404
4. Step 4: Simplify right side
   557,452.50x = 707,960,691,216
5. Step 5: Solve for x
   x = 707,960,691,216/557,452.50
6. Step 6: Final answer
   x = 1,269,992.85