Finding the Third Proportional to 1,866,573 and 3,997,530

Step by Step Solution

1. Step 1: Write the proportion equation
   1,866,573 : 3,997,530 = 3,997,530 : x
2. Step 2: Convert to fraction form
   1,866,573/3,997,530 = 3,997,530/x
3. Step 3: Cross multiply
   1,866,573x = 3,997,530 × 3,997,530
4. Step 4: Simplify right side
   1,866,573x = 15,980,246,100,900
5. Step 5: Solve for x
   x = 15,980,246,100,900/1,866,573
6. Step 6: Final answer
   x = 8,561,275.72