Finding the Third Proportional to 621,042 and 1,337,218

Step by Step Solution

1. Step 1: Write the proportion equation
   621,042 : 1,337,218 = 1,337,218 : x
2. Step 2: Convert to fraction form
   621,042/1,337,218 = 1,337,218/x
3. Step 3: Cross multiply
   621,042x = 1,337,218 × 1,337,218
4. Step 4: Simplify right side
   621,042x = 1,788,151,979,524
5. Step 5: Solve for x
   x = 1,788,151,979,524/621,042
6. Step 6: Final answer
   x = 2,879,277.05