Finding the Third Proportional to 2,189,172 and 4,790,680

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189,172 : 4,790,680 = 4,790,680 : x
2. Step 2: Convert to fraction form
   2,189,172/4,790,680 = 4,790,680/x
3. Step 3: Cross multiply
   2,189,172x = 4,790,680 × 4,790,680
4. Step 4: Simplify right side
   2,189,172x = 22,950,614,862,400
5. Step 5: Solve for x
   x = 22,950,614,862,400/2,189,172
6. Step 6: Final answer
   x = 10,483,696.51