Finding the Third Proportional to 314,840.25 and 679,434

Step by Step Solution

1. Step 1: Write the proportion equation
   314,840.25 : 679,434 = 679,434 : x
2. Step 2: Convert to fraction form
   314,840.25/679,434 = 679,434/x
3. Step 3: Cross multiply
   314,840.25x = 679,434 × 679,434
4. Step 4: Simplify right side
   314,840.25x = 461,630,560,356
5. Step 5: Solve for x
   x = 461,630,560,356/314,840.25
6. Step 6: Final answer
   x = 1,466,237.43