Finding the Third Proportional to 1,007,517 and 2,128,749

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007,517 : 2,128,749 = 2,128,749 : x
2. Step 2: Convert to fraction form
   1,007,517/2,128,749 = 2,128,749/x
3. Step 3: Cross multiply
   1,007,517x = 2,128,749 × 2,128,749
4. Step 4: Simplify right side
   1,007,517x = 4,531,572,305,001
5. Step 5: Solve for x
   x = 4,531,572,305,001/1,007,517
6. Step 6: Final answer
   x = 4,497,762.62