Finding the Third Proportional to 428,914 and 630,883

Step by Step Solution

1. Step 1: Write the proportion equation
   428,914 : 630,883 = 630,883 : x
2. Step 2: Convert to fraction form
   428,914/630,883 = 630,883/x
3. Step 3: Cross multiply
   428,914x = 630,883 × 630,883
4. Step 4: Simplify right side
   428,914x = 398,013,359,689
5. Step 5: Solve for x
   x = 398,013,359,689/428,914
6. Step 6: Final answer
   x = 927,956.09