Finding the Third Proportional to 2,159,871 and 4,640,271

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159,871 : 4,640,271 = 4,640,271 : x
2. Step 2: Convert to fraction form
   2,159,871/4,640,271 = 4,640,271/x
3. Step 3: Cross multiply
   2,159,871x = 4,640,271 × 4,640,271
4. Step 4: Simplify right side
   2,159,871x = 21,532,114,953,441
5. Step 5: Solve for x
   x = 21,532,114,953,441/2,159,871
6. Step 6: Final answer
   x = 9,969,167.12