Finding the Third Proportional to 1,255,868 and 2,645,144

Step by Step Solution

1. Step 1: Write the proportion equation
   1,255,868 : 2,645,144 = 2,645,144 : x
2. Step 2: Convert to fraction form
   1,255,868/2,645,144 = 2,645,144/x
3. Step 3: Cross multiply
   1,255,868x = 2,645,144 × 2,645,144
4. Step 4: Simplify right side
   1,255,868x = 6,996,786,780,736
5. Step 5: Solve for x
   x = 6,996,786,780,736/1,255,868
6. Step 6: Final answer
   x = 5,571,275.63