Finding the Third Proportional to 1,261,390 and 2,838,546

Step by Step Solution

1. Step 1: Write the proportion equation
   1,261,390 : 2,838,546 = 2,838,546 : x
2. Step 2: Convert to fraction form
   1,261,390/2,838,546 = 2,838,546/x
3. Step 3: Cross multiply
   1,261,390x = 2,838,546 × 2,838,546
4. Step 4: Simplify right side
   1,261,390x = 8,057,343,394,116
5. Step 5: Solve for x
   x = 8,057,343,394,116/1,261,390
6. Step 6: Final answer
   x = 6,387,670.26