Finding the Third Proportional to 2,142,880 and 4,463,272

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,880 : 4,463,272 = 4,463,272 : x
2. Step 2: Convert to fraction form
   2,142,880/4,463,272 = 4,463,272/x
3. Step 3: Cross multiply
   2,142,880x = 4,463,272 × 4,463,272
4. Step 4: Simplify right side
   2,142,880x = 19,920,796,945,984
5. Step 5: Solve for x
   x = 19,920,796,945,984/2,142,880
6. Step 6: Final answer
   x = 9,296,272.75