Finding the Third Proportional to 315,030 and 679,834

Step by Step Solution

1. Step 1: Write the proportion equation
   315,030 : 679,834 = 679,834 : x
2. Step 2: Convert to fraction form
   315,030/679,834 = 679,834/x
3. Step 3: Cross multiply
   315,030x = 679,834 × 679,834
4. Step 4: Simplify right side
   315,030x = 462,174,267,556
5. Step 5: Solve for x
   x = 462,174,267,556/315,030
6. Step 6: Final answer
   x = 1,467,080.18