Finding the Third Proportional to 1,820,969 and 3,988,861

Step by Step Solution

1. Step 1: Write the proportion equation
   1,820,969 : 3,988,861 = 3,988,861 : x
2. Step 2: Convert to fraction form
   1,820,969/3,988,861 = 3,988,861/x
3. Step 3: Cross multiply
   1,820,969x = 3,988,861 × 3,988,861
4. Step 4: Simplify right side
   1,820,969x = 15,911,012,077,321
5. Step 5: Solve for x
   x = 15,911,012,077,321/1,820,969
6. Step 6: Final answer
   x = 8,737,662.24