Finding the Third Proportional to 1,215,168 and 2,659,188

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,168 : 2,659,188 = 2,659,188 : x
2. Step 2: Convert to fraction form
   1,215,168/2,659,188 = 2,659,188/x
3. Step 3: Cross multiply
   1,215,168x = 2,659,188 × 2,659,188
4. Step 4: Simplify right side
   1,215,168x = 7,071,280,819,344
5. Step 5: Solve for x
   x = 7,071,280,819,344/1,215,168
6. Step 6: Final answer
   x = 5,819,179.59