Finding the Third Proportional to 1,215,226 and 2,617,442

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,226 : 2,617,442 = 2,617,442 : x
2. Step 2: Convert to fraction form
   1,215,226/2,617,442 = 2,617,442/x
3. Step 3: Cross multiply
   1,215,226x = 2,617,442 × 2,617,442
4. Step 4: Simplify right side
   1,215,226x = 6,851,002,623,364
5. Step 5: Solve for x
   x = 6,851,002,623,364/1,215,226
6. Step 6: Final answer
   x = 5,637,636.64