Finding the Third Proportional to 663,684 and 1,020,708

Step by Step Solution

1. Step 1: Write the proportion equation
   663,684 : 1,020,708 = 1,020,708 : x
2. Step 2: Convert to fraction form
   663,684/1,020,708 = 1,020,708/x
3. Step 3: Cross multiply
   663,684x = 1,020,708 × 1,020,708
4. Step 4: Simplify right side
   663,684x = 1,041,844,821,264
5. Step 5: Solve for x
   x = 1,041,844,821,264/663,684
6. Step 6: Final answer
   x = 1,569,790.47