Finding the Third Proportional to 1,391,878 and 2,911,017

Step by Step Solution

1. Step 1: Write the proportion equation
   1,391,878 : 2,911,017 = 2,911,017 : x
2. Step 2: Convert to fraction form
   1,391,878/2,911,017 = 2,911,017/x
3. Step 3: Cross multiply
   1,391,878x = 2,911,017 × 2,911,017
4. Step 4: Simplify right side
   1,391,878x = 8,474,019,974,289
5. Step 5: Solve for x
   x = 8,474,019,974,289/1,391,878
6. Step 6: Final answer
   x = 6,088,191.62