Finding the Third Proportional to 1,865,390 and 4,016,176

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865,390 : 4,016,176 = 4,016,176 : x
2. Step 2: Convert to fraction form
   1,865,390/4,016,176 = 4,016,176/x
3. Step 3: Cross multiply
   1,865,390x = 4,016,176 × 4,016,176
4. Step 4: Simplify right side
   1,865,390x = 16,129,669,662,976
5. Step 5: Solve for x
   x = 16,129,669,662,976/1,865,390
6. Step 6: Final answer
   x = 8,646,808.26