Finding the Third Proportional to 1,866,818 and 4,071,512

Step by Step Solution

1. Step 1: Write the proportion equation
   1,866,818 : 4,071,512 = 4,071,512 : x
2. Step 2: Convert to fraction form
   1,866,818/4,071,512 = 4,071,512/x
3. Step 3: Cross multiply
   1,866,818x = 4,071,512 × 4,071,512
4. Step 4: Simplify right side
   1,866,818x = 16,577,209,966,144
5. Step 5: Solve for x
   x = 16,577,209,966,144/1,866,818
6. Step 6: Final answer
   x = 8,879,928.29