Finding the Third Proportional to 818,780 and 1,776,722

Step by Step Solution

1. Step 1: Write the proportion equation
   818,780 : 1,776,722 = 1,776,722 : x
2. Step 2: Convert to fraction form
   818,780/1,776,722 = 1,776,722/x
3. Step 3: Cross multiply
   818,780x = 1,776,722 × 1,776,722
4. Step 4: Simplify right side
   818,780x = 3,156,741,065,284
5. Step 5: Solve for x
   x = 3,156,741,065,284/818,780
6. Step 6: Final answer
   x = 3,855,420.34