Finding the Third Proportional to 776,812 and 1,661,560

Step by Step Solution

1. Step 1: Write the proportion equation
   776,812 : 1,661,560 = 1,661,560 : x
2. Step 2: Convert to fraction form
   776,812/1,661,560 = 1,661,560/x
3. Step 3: Cross multiply
   776,812x = 1,661,560 × 1,661,560
4. Step 4: Simplify right side
   776,812x = 2,760,781,633,600
5. Step 5: Solve for x
   x = 2,760,781,633,600/776,812
6. Step 6: Final answer
   x = 3,553,989.43