Finding the Third Proportional to 245,714 and 517,666

Step by Step Solution

1. Step 1: Write the proportion equation
   245,714 : 517,666 = 517,666 : x
2. Step 2: Convert to fraction form
   245,714/517,666 = 517,666/x
3. Step 3: Cross multiply
   245,714x = 517,666 × 517,666
4. Step 4: Simplify right side
   245,714x = 267,978,087,556
5. Step 5: Solve for x
   x = 267,978,087,556/245,714
6. Step 6: Final answer
   x = 1,090,609.76