Finding the Third Proportional to 1,870,390 and 4,090,772

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870,390 : 4,090,772 = 4,090,772 : x
2. Step 2: Convert to fraction form
   1,870,390/4,090,772 = 4,090,772/x
3. Step 3: Cross multiply
   1,870,390x = 4,090,772 × 4,090,772
4. Step 4: Simplify right side
   1,870,390x = 16,734,415,555,984
5. Step 5: Solve for x
   x = 16,734,415,555,984/1,870,390
6. Step 6: Final answer
   x = 8,947,019.37