Finding the Third Proportional to 458,568 and 611,590.50

Step by Step Solution

1. Step 1: Write the proportion equation
   458,568 : 611,590.50 = 611,590.50 : x
2. Step 2: Convert to fraction form
   458,568/611,590.50 = 611,590.50/x
3. Step 3: Cross multiply
   458,568x = 611,590.50 × 611,590.50
4. Step 4: Simplify right side
   458,568x = 374,042,939,690.25
5. Step 5: Solve for x
   x = 374,042,939,690.25/458,568
6. Step 6: Final answer
   x = 815,676.06