Finding the Third Proportional to 1,215,150 and 2,659,144

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,150 : 2,659,144 = 2,659,144 : x
2. Step 2: Convert to fraction form
   1,215,150/2,659,144 = 2,659,144/x
3. Step 3: Cross multiply
   1,215,150x = 2,659,144 × 2,659,144
4. Step 4: Simplify right side
   1,215,150x = 7,071,046,812,736
5. Step 5: Solve for x
   x = 7,071,046,812,736/1,215,150
6. Step 6: Final answer
   x = 5,819,073.21