Finding the Third Proportional to 2,256,120 and 4,871,890

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256,120 : 4,871,890 = 4,871,890 : x
2. Step 2: Convert to fraction form
   2,256,120/4,871,890 = 4,871,890/x
3. Step 3: Cross multiply
   2,256,120x = 4,871,890 × 4,871,890
4. Step 4: Simplify right side
   2,256,120x = 23,735,312,172,100
5. Step 5: Solve for x
   x = 23,735,312,172,100/2,256,120
6. Step 6: Final answer
   x = 10,520,412.11