Finding the Third Proportional to 1,445,872 and 3,140,645

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445,872 : 3,140,645 = 3,140,645 : x
2. Step 2: Convert to fraction form
   1,445,872/3,140,645 = 3,140,645/x
3. Step 3: Cross multiply
   1,445,872x = 3,140,645 × 3,140,645
4. Step 4: Simplify right side
   1,445,872x = 9,863,651,016,025
5. Step 5: Solve for x
   x = 9,863,651,016,025/1,445,872
6. Step 6: Final answer
   x = 6,821,939.30