Finding the Third Proportional to 1,806,921 and 2,660,418

Step by Step Solution

1. Step 1: Write the proportion equation
   1,806,921 : 2,660,418 = 2,660,418 : x
2. Step 2: Convert to fraction form
   1,806,921/2,660,418 = 2,660,418/x
3. Step 3: Cross multiply
   1,806,921x = 2,660,418 × 2,660,418
4. Step 4: Simplify right side
   1,806,921x = 7,077,823,934,724
5. Step 5: Solve for x
   x = 7,077,823,934,724/1,806,921
6. Step 6: Final answer
   x = 3,917,063.30