Finding the Third Proportional to 2,220,432 and 5,239,896

Step by Step Solution

1. Step 1: Write the proportion equation
   2,220,432 : 5,239,896 = 5,239,896 : x
2. Step 2: Convert to fraction form
   2,220,432/5,239,896 = 5,239,896/x
3. Step 3: Cross multiply
   2,220,432x = 5,239,896 × 5,239,896
4. Step 4: Simplify right side
   2,220,432x = 27,456,510,090,816
5. Step 5: Solve for x
   x = 27,456,510,090,816/2,220,432
6. Step 6: Final answer
   x = 12,365,391.10