Finding the Third Proportional to 1,257,255 and 2,715,390

Step by Step Solution

1. Step 1: Write the proportion equation
   1,257,255 : 2,715,390 = 2,715,390 : x
2. Step 2: Convert to fraction form
   1,257,255/2,715,390 = 2,715,390/x
3. Step 3: Cross multiply
   1,257,255x = 2,715,390 × 2,715,390
4. Step 4: Simplify right side
   1,257,255x = 7,373,342,852,100
5. Step 5: Solve for x
   x = 7,373,342,852,100/1,257,255
6. Step 6: Final answer
   x = 5,864,635.93