Finding the Third Proportional to 1,291,781 and 2,780,986

Step by Step Solution

1. Step 1: Write the proportion equation
   1,291,781 : 2,780,986 = 2,780,986 : x
2. Step 2: Convert to fraction form
   1,291,781/2,780,986 = 2,780,986/x
3. Step 3: Cross multiply
   1,291,781x = 2,780,986 × 2,780,986
4. Step 4: Simplify right side
   1,291,781x = 7,733,883,132,196
5. Step 5: Solve for x
   x = 7,733,883,132,196/1,291,781
6. Step 6: Final answer
   x = 5,986,992.48