Finding the Third Proportional to 2,221,640 and 4,600,816

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221,640 : 4,600,816 = 4,600,816 : x
2. Step 2: Convert to fraction form
   2,221,640/4,600,816 = 4,600,816/x
3. Step 3: Cross multiply
   2,221,640x = 4,600,816 × 4,600,816
4. Step 4: Simplify right side
   2,221,640x = 21,167,507,865,856
5. Step 5: Solve for x
   x = 21,167,507,865,856/2,221,640
6. Step 6: Final answer
   x = 9,527,874.84