Finding the Third Proportional to 663,600 and 1,007,688

Step by Step Solution

1. Step 1: Write the proportion equation
   663,600 : 1,007,688 = 1,007,688 : x
2. Step 2: Convert to fraction form
   663,600/1,007,688 = 1,007,688/x
3. Step 3: Cross multiply
   663,600x = 1,007,688 × 1,007,688
4. Step 4: Simplify right side
   663,600x = 1,015,435,105,344
5. Step 5: Solve for x
   x = 1,015,435,105,344/663,600
6. Step 6: Final answer
   x = 1,530,191.54