Finding the Third Proportional to 1,247,040 and 3,015,216

Step by Step Solution

1. Step 1: Write the proportion equation
   1,247,040 : 3,015,216 = 3,015,216 : x
2. Step 2: Convert to fraction form
   1,247,040/3,015,216 = 3,015,216/x
3. Step 3: Cross multiply
   1,247,040x = 3,015,216 × 3,015,216
4. Step 4: Simplify right side
   1,247,040x = 9,091,527,526,656
5. Step 5: Solve for x
   x = 9,091,527,526,656/1,247,040
6. Step 6: Final answer
   x = 7,290,485.89