Finding the Third Proportional to 429,144 and 630,578

Step by Step Solution

1. Step 1: Write the proportion equation
   429,144 : 630,578 = 630,578 : x
2. Step 2: Convert to fraction form
   429,144/630,578 = 630,578/x
3. Step 3: Cross multiply
   429,144x = 630,578 × 630,578
4. Step 4: Simplify right side
   429,144x = 397,628,614,084
5. Step 5: Solve for x
   x = 397,628,614,084/429,144
6. Step 6: Final answer
   x = 926,562.21