Finding the Third Proportional to 623,688 and 1,004,436

Step by Step Solution

1. Step 1: Write the proportion equation
   623,688 : 1,004,436 = 1,004,436 : x
2. Step 2: Convert to fraction form
   623,688/1,004,436 = 1,004,436/x
3. Step 3: Cross multiply
   623,688x = 1,004,436 × 1,004,436
4. Step 4: Simplify right side
   623,688x = 1,008,891,678,096
5. Step 5: Solve for x
   x = 1,008,891,678,096/623,688
6. Step 6: Final answer
   x = 1,617,622.40