Finding the Third Proportional to 561,836 and 1,228,772

Step by Step Solution

1. Step 1: Write the proportion equation
   561,836 : 1,228,772 = 1,228,772 : x
2. Step 2: Convert to fraction form
   561,836/1,228,772 = 1,228,772/x
3. Step 3: Cross multiply
   561,836x = 1,228,772 × 1,228,772
4. Step 4: Simplify right side
   561,836x = 1,509,880,627,984
5. Step 5: Solve for x
   x = 1,509,880,627,984/561,836
6. Step 6: Final answer
   x = 2,687,404.56