Finding the Third Proportional to 2,042,880 and 4,144,128

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042,880 : 4,144,128 = 4,144,128 : x
2. Step 2: Convert to fraction form
   2,042,880/4,144,128 = 4,144,128/x
3. Step 3: Cross multiply
   2,042,880x = 4,144,128 × 4,144,128
4. Step 4: Simplify right side
   2,042,880x = 17,173,796,880,384
5. Step 5: Solve for x
   x = 17,173,796,880,384/2,042,880
6. Step 6: Final answer
   x = 8,406,659.66