Finding the Third Proportional to 1,388,037 and 1,890,963

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,037 : 1,890,963 = 1,890,963 : x
2. Step 2: Convert to fraction form
   1,388,037/1,890,963 = 1,890,963/x
3. Step 3: Cross multiply
   1,388,037x = 1,890,963 × 1,890,963
4. Step 4: Simplify right side
   1,388,037x = 3,575,741,067,369
5. Step 5: Solve for x
   x = 3,575,741,067,369/1,388,037
6. Step 6: Final answer
   x = 2,576,113.65