Finding the Third Proportional to 1,275,378 and 1,953,243

Step by Step Solution

1. Step 1: Write the proportion equation
   1,275,378 : 1,953,243 = 1,953,243 : x
2. Step 2: Convert to fraction form
   1,275,378/1,953,243 = 1,953,243/x
3. Step 3: Cross multiply
   1,275,378x = 1,953,243 × 1,953,243
4. Step 4: Simplify right side
   1,275,378x = 3,815,158,217,049
5. Step 5: Solve for x
   x = 3,815,158,217,049/1,275,378
6. Step 6: Final answer
   x = 2,991,394.09