Finding the Third Proportional to 1,012,878 and 2,139,750

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,878 : 2,139,750 = 2,139,750 : x
2. Step 2: Convert to fraction form
   1,012,878/2,139,750 = 2,139,750/x
3. Step 3: Cross multiply
   1,012,878x = 2,139,750 × 2,139,750
4. Step 4: Simplify right side
   1,012,878x = 4,578,530,062,500
5. Step 5: Solve for x
   x = 4,578,530,062,500/1,012,878
6. Step 6: Final answer
   x = 4,520,317.41