Finding the Third Proportional to 1,012,911 and 2,161,416

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,911 : 2,161,416 = 2,161,416 : x
2. Step 2: Convert to fraction form
   1,012,911/2,161,416 = 2,161,416/x
3. Step 3: Cross multiply
   1,012,911x = 2,161,416 × 2,161,416
4. Step 4: Simplify right side
   1,012,911x = 4,671,719,125,056
5. Step 5: Solve for x
   x = 4,671,719,125,056/1,012,911
6. Step 6: Final answer
   x = 4,612,171.38