Finding the Third Proportional to 1,077,208 and 1,638,198

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077,208 : 1,638,198 = 1,638,198 : x
2. Step 2: Convert to fraction form
   1,077,208/1,638,198 = 1,638,198/x
3. Step 3: Cross multiply
   1,077,208x = 1,638,198 × 1,638,198
4. Step 4: Simplify right side
   1,077,208x = 2,683,692,687,204
5. Step 5: Solve for x
   x = 2,683,692,687,204/1,077,208
6. Step 6: Final answer
   x = 2,491,341.21