Finding the Third Proportional to 672,717 and 1,038,820

Step by Step Solution

1. Step 1: Write the proportion equation
   672,717 : 1,038,820 = 1,038,820 : x
2. Step 2: Convert to fraction form
   672,717/1,038,820 = 1,038,820/x
3. Step 3: Cross multiply
   672,717x = 1,038,820 × 1,038,820
4. Step 4: Simplify right side
   672,717x = 1,079,146,992,400
5. Step 5: Solve for x
   x = 1,079,146,992,400/672,717
6. Step 6: Final answer
   x = 1,604,161.92