Finding the Third Proportional to 2,140,258 and 4,457,664

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,258 : 4,457,664 = 4,457,664 : x
2. Step 2: Convert to fraction form
   2,140,258/4,457,664 = 4,457,664/x
3. Step 3: Cross multiply
   2,140,258x = 4,457,664 × 4,457,664
4. Step 4: Simplify right side
   2,140,258x = 19,870,768,336,896
5. Step 5: Solve for x
   x = 19,870,768,336,896/2,140,258
6. Step 6: Final answer
   x = 9,284,286.44