Finding the Third Proportional to 578,743 and 1,269,538

Step by Step Solution

1. Step 1: Write the proportion equation
   578,743 : 1,269,538 = 1,269,538 : x
2. Step 2: Convert to fraction form
   578,743/1,269,538 = 1,269,538/x
3. Step 3: Cross multiply
   578,743x = 1,269,538 × 1,269,538
4. Step 4: Simplify right side
   578,743x = 1,611,726,733,444
5. Step 5: Solve for x
   x = 1,611,726,733,444/578,743
6. Step 6: Final answer
   x = 2,784,874.69