Finding the Third Proportional to 1,438,134 and 3,120,723

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438,134 : 3,120,723 = 3,120,723 : x
2. Step 2: Convert to fraction form
   1,438,134/3,120,723 = 3,120,723/x
3. Step 3: Cross multiply
   1,438,134x = 3,120,723 × 3,120,723
4. Step 4: Simplify right side
   1,438,134x = 9,738,912,042,729
5. Step 5: Solve for x
   x = 9,738,912,042,729/1,438,134
6. Step 6: Final answer
   x = 6,771,908.63