Finding the Third Proportional to 561,684 and 1,223,256

Step by Step Solution

1. Step 1: Write the proportion equation
   561,684 : 1,223,256 = 1,223,256 : x
2. Step 2: Convert to fraction form
   561,684/1,223,256 = 1,223,256/x
3. Step 3: Cross multiply
   561,684x = 1,223,256 × 1,223,256
4. Step 4: Simplify right side
   561,684x = 1,496,355,241,536
5. Step 5: Solve for x
   x = 1,496,355,241,536/561,684
6. Step 6: Final answer
   x = 2,664,051.75