Finding the Third Proportional to 579,987 and 816,760.50

Step by Step Solution

1. Step 1: Write the proportion equation
   579,987 : 816,760.50 = 816,760.50 : x
2. Step 2: Convert to fraction form
   579,987/816,760.50 = 816,760.50/x
3. Step 3: Cross multiply
   579,987x = 816,760.50 × 816,760.50
4. Step 4: Simplify right side
   579,987x = 667,097,714,360.25
5. Step 5: Solve for x
   x = 667,097,714,360.25/579,987
6. Step 6: Final answer
   x = 1,150,194.25