Finding the Third Proportional to 311,238 and 679,014

Step by Step Solution

1. Step 1: Write the proportion equation
   311,238 : 679,014 = 679,014 : x
2. Step 2: Convert to fraction form
   311,238/679,014 = 679,014/x
3. Step 3: Cross multiply
   311,238x = 679,014 × 679,014
4. Step 4: Simplify right side
   311,238x = 461,060,012,196
5. Step 5: Solve for x
   x = 461,060,012,196/311,238
6. Step 6: Final answer
   x = 1,481,374.42