Finding the Third Proportional to 776,809.50 and 1,661,556

Step by Step Solution

1. Step 1: Write the proportion equation
   776,809.50 : 1,661,556 = 1,661,556 : x
2. Step 2: Convert to fraction form
   776,809.50/1,661,556 = 1,661,556/x
3. Step 3: Cross multiply
   776,809.50x = 1,661,556 × 1,661,556
4. Step 4: Simplify right side
   776,809.50x = 2,760,768,341,136
5. Step 5: Solve for x
   x = 2,760,768,341,136/776,809.50
6. Step 6: Final answer
   x = 3,553,983.75