Finding the Third Proportional to 2,219,672 and 4,871,392

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219,672 : 4,871,392 = 4,871,392 : x
2. Step 2: Convert to fraction form
   2,219,672/4,871,392 = 4,871,392/x
3. Step 3: Cross multiply
   2,219,672x = 4,871,392 × 4,871,392
4. Step 4: Simplify right side
   2,219,672x = 23,730,460,017,664
5. Step 5: Solve for x
   x = 23,730,460,017,664/2,219,672
6. Step 6: Final answer
   x = 10,690,975.97