Finding the Third Proportional to 1,287,742 and 2,543,054

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,742 : 2,543,054 = 2,543,054 : x
2. Step 2: Convert to fraction form
   1,287,742/2,543,054 = 2,543,054/x
3. Step 3: Cross multiply
   1,287,742x = 2,543,054 × 2,543,054
4. Step 4: Simplify right side
   1,287,742x = 6,467,123,646,916
5. Step 5: Solve for x
   x = 6,467,123,646,916/1,287,742
6. Step 6: Final answer
   x = 5,022,064.70