Finding the Third Proportional to 2,687,258.11 and 5,846,899.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,687,258.11 : 5,846,899.78 = 5,846,899.78 : x
2. Step 2: Convert to fraction form
   2,687,258.11/5,846,899.78 = 5,846,899.78/x
3. Step 3: Cross multiply
   2,687,258.11x = 5,846,899.78 × 5,846,899.78
4. Step 4: Simplify right side
   2,687,258.11x = 34,186,237,051,981.30
5. Step 5: Solve for x
   x = 34,186,237,051,981.30/2,687,258.11
6. Step 6: Final answer
   x = 12,721,605.32