Finding the Third Proportional to 314,851.50 and 679,455

Step by Step Solution

1. Step 1: Write the proportion equation
   314,851.50 : 679,455 = 679,455 : x
2. Step 2: Convert to fraction form
   314,851.50/679,455 = 679,455/x
3. Step 3: Cross multiply
   314,851.50x = 679,455 × 679,455
4. Step 4: Simplify right side
   314,851.50x = 461,659,097,025
5. Step 5: Solve for x
   x = 461,659,097,025/314,851.50
6. Step 6: Final answer
   x = 1,466,275.68