Finding the Third Proportional to 1,331,221 and 2,911,274

Step by Step Solution

1. Step 1: Write the proportion equation
   1,331,221 : 2,911,274 = 2,911,274 : x
2. Step 2: Convert to fraction form
   1,331,221/2,911,274 = 2,911,274/x
3. Step 3: Cross multiply
   1,331,221x = 2,911,274 × 2,911,274
4. Step 4: Simplify right side
   1,331,221x = 8,475,516,303,076
5. Step 5: Solve for x
   x = 8,475,516,303,076/1,331,221
6. Step 6: Final answer
   x = 6,366,723.71