Finding the Third Proportional to 1,015,906 and 2,171,780

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015,906 : 2,171,780 = 2,171,780 : x
2. Step 2: Convert to fraction form
   1,015,906/2,171,780 = 2,171,780/x
3. Step 3: Cross multiply
   1,015,906x = 2,171,780 × 2,171,780
4. Step 4: Simplify right side
   1,015,906x = 4,716,628,368,400
5. Step 5: Solve for x
   x = 4,716,628,368,400/1,015,906
6. Step 6: Final answer
   x = 4,642,780.30