Finding the Third Proportional to 562,636 and 1,213,256

Step by Step Solution

1. Step 1: Write the proportion equation
   562,636 : 1,213,256 = 1,213,256 : x
2. Step 2: Convert to fraction form
   562,636/1,213,256 = 1,213,256/x
3. Step 3: Cross multiply
   562,636x = 1,213,256 × 1,213,256
4. Step 4: Simplify right side
   562,636x = 1,471,990,121,536
5. Step 5: Solve for x
   x = 1,471,990,121,536/562,636
6. Step 6: Final answer
   x = 2,616,238.78