Finding the Third Proportional to 838,398 and 1,818,576

Step by Step Solution

1. Step 1: Write the proportion equation
   838,398 : 1,818,576 = 1,818,576 : x
2. Step 2: Convert to fraction form
   838,398/1,818,576 = 1,818,576/x
3. Step 3: Cross multiply
   838,398x = 1,818,576 × 1,818,576
4. Step 4: Simplify right side
   838,398x = 3,307,218,667,776
5. Step 5: Solve for x
   x = 3,307,218,667,776/838,398
6. Step 6: Final answer
   x = 3,944,688.16