Finding the Third Proportional to 2,150,949 and 4,681,220

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150,949 : 4,681,220 = 4,681,220 : x
2. Step 2: Convert to fraction form
   2,150,949/4,681,220 = 4,681,220/x
3. Step 3: Cross multiply
   2,150,949x = 4,681,220 × 4,681,220
4. Step 4: Simplify right side
   2,150,949x = 21,913,820,688,400
5. Step 5: Solve for x
   x = 21,913,820,688,400/2,150,949
6. Step 6: Final answer
   x = 10,187,977.81