Finding the Third Proportional to 1,236,456 and 2,636,216

Step by Step Solution

1. Step 1: Write the proportion equation
   1,236,456 : 2,636,216 = 2,636,216 : x
2. Step 2: Convert to fraction form
   1,236,456/2,636,216 = 2,636,216/x
3. Step 3: Cross multiply
   1,236,456x = 2,636,216 × 2,636,216
4. Step 4: Simplify right side
   1,236,456x = 6,949,634,798,656
5. Step 5: Solve for x
   x = 6,949,634,798,656/1,236,456
6. Step 6: Final answer
   x = 5,620,608.25