Finding the Third Proportional to 557,455.50 and 841,408

Step by Step Solution

1. Step 1: Write the proportion equation
   557,455.50 : 841,408 = 841,408 : x
2. Step 2: Convert to fraction form
   557,455.50/841,408 = 841,408/x
3. Step 3: Cross multiply
   557,455.50x = 841,408 × 841,408
4. Step 4: Simplify right side
   557,455.50x = 707,967,422,464
5. Step 5: Solve for x
   x = 707,967,422,464/557,455.50
6. Step 6: Final answer
   x = 1,269,998.09