Finding the Third Proportional to 1,640,736 and 2,518,560

Step by Step Solution

1. Step 1: Write the proportion equation
   1,640,736 : 2,518,560 = 2,518,560 : x
2. Step 2: Convert to fraction form
   1,640,736/2,518,560 = 2,518,560/x
3. Step 3: Cross multiply
   1,640,736x = 2,518,560 × 2,518,560
4. Step 4: Simplify right side
   1,640,736x = 6,343,144,473,600
5. Step 5: Solve for x
   x = 6,343,144,473,600/1,640,736
6. Step 6: Final answer
   x = 3,866,036.02