Finding the Third Proportional to 355,118 and 760,780

Step by Step Solution

1. Step 1: Write the proportion equation
   355,118 : 760,780 = 760,780 : x
2. Step 2: Convert to fraction form
   355,118/760,780 = 760,780/x
3. Step 3: Cross multiply
   355,118x = 760,780 × 760,780
4. Step 4: Simplify right side
   355,118x = 578,786,208,400
5. Step 5: Solve for x
   x = 578,786,208,400/355,118
6. Step 6: Final answer
   x = 1,629,841.94