Finding the Third Proportional to 1,258,434 and 1,887,786

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258,434 : 1,887,786 = 1,887,786 : x
2. Step 2: Convert to fraction form
   1,258,434/1,887,786 = 1,887,786/x
3. Step 3: Cross multiply
   1,258,434x = 1,887,786 × 1,887,786
4. Step 4: Simplify right side
   1,258,434x = 3,563,735,981,796
5. Step 5: Solve for x
   x = 3,563,735,981,796/1,258,434
6. Step 6: Final answer
   x = 2,831,881.51