Finding the Third Proportional to 429,390 and 630,951

Step by Step Solution

1. Step 1: Write the proportion equation
   429,390 : 630,951 = 630,951 : x
2. Step 2: Convert to fraction form
   429,390/630,951 = 630,951/x
3. Step 3: Cross multiply
   429,390x = 630,951 × 630,951
4. Step 4: Simplify right side
   429,390x = 398,099,164,401
5. Step 5: Solve for x
   x = 398,099,164,401/429,390
6. Step 6: Final answer
   x = 927,127.24