Finding the Third Proportional to 819,343 and 1,240,401

Step by Step Solution

1. Step 1: Write the proportion equation
   819,343 : 1,240,401 = 1,240,401 : x
2. Step 2: Convert to fraction form
   819,343/1,240,401 = 1,240,401/x
3. Step 3: Cross multiply
   819,343x = 1,240,401 × 1,240,401
4. Step 4: Simplify right side
   819,343x = 1,538,594,640,801
5. Step 5: Solve for x
   x = 1,538,594,640,801/819,343
6. Step 6: Final answer
   x = 1,877,839.49