Finding the Third Proportional to 1,434,340 and 3,121,028

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434,340 : 3,121,028 = 3,121,028 : x
2. Step 2: Convert to fraction form
   1,434,340/3,121,028 = 3,121,028/x
3. Step 3: Cross multiply
   1,434,340x = 3,121,028 × 3,121,028
4. Step 4: Simplify right side
   1,434,340x = 9,740,815,776,784
5. Step 5: Solve for x
   x = 9,740,815,776,784/1,434,340
6. Step 6: Final answer
   x = 6,791,148.39