Finding the Third Proportional to 776,543 and 1,661,039

Step by Step Solution

1. Step 1: Write the proportion equation
   776,543 : 1,661,039 = 1,661,039 : x
2. Step 2: Convert to fraction form
   776,543/1,661,039 = 1,661,039/x
3. Step 3: Cross multiply
   776,543x = 1,661,039 × 1,661,039
4. Step 4: Simplify right side
   776,543x = 2,759,050,559,521
5. Step 5: Solve for x
   x = 2,759,050,559,521/776,543
6. Step 6: Final answer
   x = 3,552,991.35