Finding the Third Proportional to 491,666 and 772,556

Step by Step Solution

1. Step 1: Write the proportion equation
   491,666 : 772,556 = 772,556 : x
2. Step 2: Convert to fraction form
   491,666/772,556 = 772,556/x
3. Step 3: Cross multiply
   491,666x = 772,556 × 772,556
4. Step 4: Simplify right side
   491,666x = 596,842,773,136
5. Step 5: Solve for x
   x = 596,842,773,136/491,666
6. Step 6: Final answer
   x = 1,213,919.15