Finding the Third Proportional to 303,578 and 653,078

Step by Step Solution

1. Step 1: Write the proportion equation
   303,578 : 653,078 = 653,078 : x
2. Step 2: Convert to fraction form
   303,578/653,078 = 653,078/x
3. Step 3: Cross multiply
   303,578x = 653,078 × 653,078
4. Step 4: Simplify right side
   303,578x = 426,510,874,084
5. Step 5: Solve for x
   x = 426,510,874,084/303,578
6. Step 6: Final answer
   x = 1,404,946.58