Finding the Third Proportional to 416,272 and 619,800

Step by Step Solution

1. Step 1: Write the proportion equation
   416,272 : 619,800 = 619,800 : x
2. Step 2: Convert to fraction form
   416,272/619,800 = 619,800/x
3. Step 3: Cross multiply
   416,272x = 619,800 × 619,800
4. Step 4: Simplify right side
   416,272x = 384,152,040,000
5. Step 5: Solve for x
   x = 384,152,040,000/416,272
6. Step 6: Final answer
   x = 922,839.01