Finding the Third Proportional to 622,142 and 1,285,756

Step by Step Solution

1. Step 1: Write the proportion equation
   622,142 : 1,285,756 = 1,285,756 : x
2. Step 2: Convert to fraction form
   622,142/1,285,756 = 1,285,756/x
3. Step 3: Cross multiply
   622,142x = 1,285,756 × 1,285,756
4. Step 4: Simplify right side
   622,142x = 1,653,168,491,536
5. Step 5: Solve for x
   x = 1,653,168,491,536/622,142
6. Step 6: Final answer
   x = 2,657,220.52