Finding the Third Proportional to 313,994 and 654,556

Step by Step Solution

1. Step 1: Write the proportion equation
   313,994 : 654,556 = 654,556 : x
2. Step 2: Convert to fraction form
   313,994/654,556 = 654,556/x
3. Step 3: Cross multiply
   313,994x = 654,556 × 654,556
4. Step 4: Simplify right side
   313,994x = 428,443,557,136
5. Step 5: Solve for x
   x = 428,443,557,136/313,994
6. Step 6: Final answer
   x = 1,364,496.00