Finding the Third Proportional to 331,668 and 779,662.50

Step by Step Solution

1. Step 1: Write the proportion equation
   331,668 : 779,662.50 = 779,662.50 : x
2. Step 2: Convert to fraction form
   331,668/779,662.50 = 779,662.50/x
3. Step 3: Cross multiply
   331,668x = 779,662.50 × 779,662.50
4. Step 4: Simplify right side
   331,668x = 607,873,613,906.25
5. Step 5: Solve for x
   x = 607,873,613,906.25/331,668
6. Step 6: Final answer
   x = 1,832,777.40