Finding the Third Proportional to 1,278,708 and 2,130,876

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,708 : 2,130,876 = 2,130,876 : x
2. Step 2: Convert to fraction form
   1,278,708/2,130,876 = 2,130,876/x
3. Step 3: Cross multiply
   1,278,708x = 2,130,876 × 2,130,876
4. Step 4: Simplify right side
   1,278,708x = 4,540,632,527,376
5. Step 5: Solve for x
   x = 4,540,632,527,376/1,278,708
6. Step 6: Final answer
   x = 3,550,953.41