Finding the Third Proportional to 1,243,708 and 2,636,878

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,708 : 2,636,878 = 2,636,878 : x
2. Step 2: Convert to fraction form
   1,243,708/2,636,878 = 2,636,878/x
3. Step 3: Cross multiply
   1,243,708x = 2,636,878 × 2,636,878
4. Step 4: Simplify right side
   1,243,708x = 6,953,125,586,884
5. Step 5: Solve for x
   x = 6,953,125,586,884/1,243,708
6. Step 6: Final answer
   x = 5,590,641.52