Finding the Third Proportional to 663,578 and 1,007,655

Step by Step Solution

1. Step 1: Write the proportion equation
   663,578 : 1,007,655 = 1,007,655 : x
2. Step 2: Convert to fraction form
   663,578/1,007,655 = 1,007,655/x
3. Step 3: Cross multiply
   663,578x = 1,007,655 × 1,007,655
4. Step 4: Simplify right side
   663,578x = 1,015,368,599,025
5. Step 5: Solve for x
   x = 1,015,368,599,025/663,578
6. Step 6: Final answer
   x = 1,530,142.05