Finding the Third Proportional to 1,866,650 and 3,989,176

Step by Step Solution

1. Step 1: Write the proportion equation
   1,866,650 : 3,989,176 = 3,989,176 : x
2. Step 2: Convert to fraction form
   1,866,650/3,989,176 = 3,989,176/x
3. Step 3: Cross multiply
   1,866,650x = 3,989,176 × 3,989,176
4. Step 4: Simplify right side
   1,866,650x = 15,913,525,158,976
5. Step 5: Solve for x
   x = 15,913,525,158,976/1,866,650
6. Step 6: Final answer
   x = 8,525,178.88