Finding the Third Proportional to 446,266 and 679,870

Step by Step Solution

1. Step 1: Write the proportion equation
   446,266 : 679,870 = 679,870 : x
2. Step 2: Convert to fraction form
   446,266/679,870 = 679,870/x
3. Step 3: Cross multiply
   446,266x = 679,870 × 679,870
4. Step 4: Simplify right side
   446,266x = 462,223,216,900
5. Step 5: Solve for x
   x = 462,223,216,900/446,266
6. Step 6: Final answer
   x = 1,035,757.19