Finding the Third Proportional to 1,287,738 and 2,543,046

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,738 : 2,543,046 = 2,543,046 : x
2. Step 2: Convert to fraction form
   1,287,738/2,543,046 = 2,543,046/x
3. Step 3: Cross multiply
   1,287,738x = 2,543,046 × 2,543,046
4. Step 4: Simplify right side
   1,287,738x = 6,467,082,958,116
5. Step 5: Solve for x
   x = 6,467,082,958,116/1,287,738
6. Step 6: Final answer
   x = 5,022,048.71