Finding the Third Proportional to 2,123,040 and 3,121,920

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123,040 : 3,121,920 = 3,121,920 : x
2. Step 2: Convert to fraction form
   2,123,040/3,121,920 = 3,121,920/x
3. Step 3: Cross multiply
   2,123,040x = 3,121,920 × 3,121,920
4. Step 4: Simplify right side
   2,123,040x = 9,746,384,486,400
5. Step 5: Solve for x
   x = 9,746,384,486,400/2,123,040
6. Step 6: Final answer
   x = 4,590,768.18