Finding the Third Proportional to 462,648 and 674,280

Step by Step Solution

1. Step 1: Write the proportion equation
   462,648 : 674,280 = 674,280 : x
2. Step 2: Convert to fraction form
   462,648/674,280 = 674,280/x
3. Step 3: Cross multiply
   462,648x = 674,280 × 674,280
4. Step 4: Simplify right side
   462,648x = 454,653,518,400
5. Step 5: Solve for x
   x = 454,653,518,400/462,648
6. Step 6: Final answer
   x = 982,720.16