Finding the Third Proportional to 690,724 and 1,065,630

Step by Step Solution

1. Step 1: Write the proportion equation
   690,724 : 1,065,630 = 1,065,630 : x
2. Step 2: Convert to fraction form
   690,724/1,065,630 = 1,065,630/x
3. Step 3: Cross multiply
   690,724x = 1,065,630 × 1,065,630
4. Step 4: Simplify right side
   690,724x = 1,135,567,296,900
5. Step 5: Solve for x
   x = 1,135,567,296,900/690,724
6. Step 6: Final answer
   x = 1,644,024.67