Finding the Third Proportional to 557,445 and 823,045.50

Step by Step Solution

1. Step 1: Write the proportion equation
   557,445 : 823,045.50 = 823,045.50 : x
2. Step 2: Convert to fraction form
   557,445/823,045.50 = 823,045.50/x
3. Step 3: Cross multiply
   557,445x = 823,045.50 × 823,045.50
4. Step 4: Simplify right side
   557,445x = 677,403,895,070.25
5. Step 5: Solve for x
   x = 677,403,895,070.25/557,445
6. Step 6: Final answer
   x = 1,215,194.14