Finding the Third Proportional to 1,277,739 and 1,978,168.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,277,739 : 1,978,168.50 = 1,978,168.50 : x
2. Step 2: Convert to fraction form
   1,277,739/1,978,168.50 = 1,978,168.50/x
3. Step 3: Cross multiply
   1,277,739x = 1,978,168.50 × 1,978,168.50
4. Step 4: Simplify right side
   1,277,739x = 3,913,150,614,392.25
5. Step 5: Solve for x
   x = 3,913,150,614,392.25/1,277,739
6. Step 6: Final answer
   x = 3,062,558.64