Finding the Third Proportional to 816,348 and 1,227,636

Step by Step Solution

1. Step 1: Write the proportion equation
   816,348 : 1,227,636 = 1,227,636 : x
2. Step 2: Convert to fraction form
   816,348/1,227,636 = 1,227,636/x
3. Step 3: Cross multiply
   816,348x = 1,227,636 × 1,227,636
4. Step 4: Simplify right side
   816,348x = 1,507,090,148,496
5. Step 5: Solve for x
   x = 1,507,090,148,496/816,348
6. Step 6: Final answer
   x = 1,846,136.88