Finding the Third Proportional to 678,258 and 1,474,492

Step by Step Solution

1. Step 1: Write the proportion equation
   678,258 : 1,474,492 = 1,474,492 : x
2. Step 2: Convert to fraction form
   678,258/1,474,492 = 1,474,492/x
3. Step 3: Cross multiply
   678,258x = 1,474,492 × 1,474,492
4. Step 4: Simplify right side
   678,258x = 2,174,126,658,064
5. Step 5: Solve for x
   x = 2,174,126,658,064/678,258
6. Step 6: Final answer
   x = 3,205,456.71