Finding the Third Proportional to 1,215,324 and 2,619,054

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,324 : 2,619,054 = 2,619,054 : x
2. Step 2: Convert to fraction form
   1,215,324/2,619,054 = 2,619,054/x
3. Step 3: Cross multiply
   1,215,324x = 2,619,054 × 2,619,054
4. Step 4: Simplify right side
   1,215,324x = 6,859,443,854,916
5. Step 5: Solve for x
   x = 6,859,443,854,916/1,215,324
6. Step 6: Final answer
   x = 5,644,127.70