Finding the Third Proportional to 1,215,316 and 2,619,042

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,316 : 2,619,042 = 2,619,042 : x
2. Step 2: Convert to fraction form
   1,215,316/2,619,042 = 2,619,042/x
3. Step 3: Cross multiply
   1,215,316x = 2,619,042 × 2,619,042
4. Step 4: Simplify right side
   1,215,316x = 6,859,380,997,764
5. Step 5: Solve for x
   x = 6,859,380,997,764/1,215,316
6. Step 6: Final answer
   x = 5,644,113.13