Finding the Third Proportional to 1,215,138 and 2,659,132

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,138 : 2,659,132 = 2,659,132 : x
2. Step 2: Convert to fraction form
   1,215,138/2,659,132 = 2,659,132/x
3. Step 3: Cross multiply
   1,215,138x = 2,659,132 × 2,659,132
4. Step 4: Simplify right side
   1,215,138x = 7,070,982,993,424
5. Step 5: Solve for x
   x = 7,070,982,993,424/1,215,138
6. Step 6: Final answer
   x = 5,819,078.16