Finding the Third Proportional to 709,821 and 1,063,638

Step by Step Solution

1. Step 1: Write the proportion equation
   709,821 : 1,063,638 = 1,063,638 : x
2. Step 2: Convert to fraction form
   709,821/1,063,638 = 1,063,638/x
3. Step 3: Cross multiply
   709,821x = 1,063,638 × 1,063,638
4. Step 4: Simplify right side
   709,821x = 1,131,325,795,044
5. Step 5: Solve for x
   x = 1,131,325,795,044/709,821
6. Step 6: Final answer
   x = 1,593,818.43