Finding the Third Proportional to 774,390 and 1,660,831

Step by Step Solution

1. Step 1: Write the proportion equation
   774,390 : 1,660,831 = 1,660,831 : x
2. Step 2: Convert to fraction form
   774,390/1,660,831 = 1,660,831/x
3. Step 3: Cross multiply
   774,390x = 1,660,831 × 1,660,831
4. Step 4: Simplify right side
   774,390x = 2,758,359,610,561
5. Step 5: Solve for x
   x = 2,758,359,610,561/774,390
6. Step 6: Final answer
   x = 3,561,977.31