Finding the Third Proportional to 1,291,620 and 2,815,749

Step by Step Solution

1. Step 1: Write the proportion equation
   1,291,620 : 2,815,749 = 2,815,749 : x
2. Step 2: Convert to fraction form
   1,291,620/2,815,749 = 2,815,749/x
3. Step 3: Cross multiply
   1,291,620x = 2,815,749 × 2,815,749
4. Step 4: Simplify right side
   1,291,620x = 7,928,442,431,001
5. Step 5: Solve for x
   x = 7,928,442,431,001/1,291,620
6. Step 6: Final answer
   x = 6,138,370.75