Finding the Third Proportional to 1,012,913 and 2,161,420

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,913 : 2,161,420 = 2,161,420 : x
2. Step 2: Convert to fraction form
   1,012,913/2,161,420 = 2,161,420/x
3. Step 3: Cross multiply
   1,012,913x = 2,161,420 × 2,161,420
4. Step 4: Simplify right side
   1,012,913x = 4,671,736,416,400
5. Step 5: Solve for x
   x = 4,671,736,416,400/1,012,913
6. Step 6: Final answer
   x = 4,612,179.34