Finding the Third Proportional to 1,012,890 and 2,161,377

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,890 : 2,161,377 = 2,161,377 : x
2. Step 2: Convert to fraction form
   1,012,890/2,161,377 = 2,161,377/x
3. Step 3: Cross multiply
   1,012,890x = 2,161,377 × 2,161,377
4. Step 4: Simplify right side
   1,012,890x = 4,671,550,536,129
5. Step 5: Solve for x
   x = 4,671,550,536,129/1,012,890
6. Step 6: Final answer
   x = 4,612,100.56