Finding the Third Proportional to 1,287,736 and 2,543,042

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,736 : 2,543,042 = 2,543,042 : x
2. Step 2: Convert to fraction form
   1,287,736/2,543,042 = 2,543,042/x
3. Step 3: Cross multiply
   1,287,736x = 2,543,042 × 2,543,042
4. Step 4: Simplify right side
   1,287,736x = 6,467,062,613,764
5. Step 5: Solve for x
   x = 6,467,062,613,764/1,287,736
6. Step 6: Final answer
   x = 5,022,040.71