Finding the Third Proportional to 429,138 and 630,568

Step by Step Solution

1. Step 1: Write the proportion equation
   429,138 : 630,568 = 630,568 : x
2. Step 2: Convert to fraction form
   429,138/630,568 = 630,568/x
3. Step 3: Cross multiply
   429,138x = 630,568 × 630,568
4. Step 4: Simplify right side
   429,138x = 397,616,002,624
5. Step 5: Solve for x
   x = 397,616,002,624/429,138
6. Step 6: Final answer
   x = 926,545.78