Finding the Third Proportional to 1,767,978 and 3,870,324

Step by Step Solution

1. Step 1: Write the proportion equation
   1,767,978 : 3,870,324 = 3,870,324 : x
2. Step 2: Convert to fraction form
   1,767,978/3,870,324 = 3,870,324/x
3. Step 3: Cross multiply
   1,767,978x = 3,870,324 × 3,870,324
4. Step 4: Simplify right side
   1,767,978x = 14,979,407,864,976
5. Step 5: Solve for x
   x = 14,979,407,864,976/1,767,978
6. Step 6: Final answer
   x = 8,472,621.19