Finding the Third Proportional to 1,308,878 and 2,736,336

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308,878 : 2,736,336 = 2,736,336 : x
2. Step 2: Convert to fraction form
   1,308,878/2,736,336 = 2,736,336/x
3. Step 3: Cross multiply
   1,308,878x = 2,736,336 × 2,736,336
4. Step 4: Simplify right side
   1,308,878x = 7,487,534,704,896
5. Step 5: Solve for x
   x = 7,487,534,704,896/1,308,878
6. Step 6: Final answer
   x = 5,720,574.95