Finding the Third Proportional to 210,780 and 497,556

Step by Step Solution

1. Step 1: Write the proportion equation
   210,780 : 497,556 = 497,556 : x
2. Step 2: Convert to fraction form
   210,780/497,556 = 497,556/x
3. Step 3: Cross multiply
   210,780x = 497,556 × 497,556
4. Step 4: Simplify right side
   210,780x = 247,561,973,136
5. Step 5: Solve for x
   x = 247,561,973,136/210,780
6. Step 6: Final answer
   x = 1,174,504.09