Finding the Third Proportional to 642,714 and 1,314,912

Step by Step Solution

1. Step 1: Write the proportion equation
   642,714 : 1,314,912 = 1,314,912 : x
2. Step 2: Convert to fraction form
   642,714/1,314,912 = 1,314,912/x
3. Step 3: Cross multiply
   642,714x = 1,314,912 × 1,314,912
4. Step 4: Simplify right side
   642,714x = 1,728,993,567,744
5. Step 5: Solve for x
   x = 1,728,993,567,744/642,714
6. Step 6: Final answer
   x = 2,690,144.56