Finding the Third Proportional to 1,020,888 and 2,215,728

Step by Step Solution

1. Step 1: Write the proportion equation
   1,020,888 : 2,215,728 = 2,215,728 : x
2. Step 2: Convert to fraction form
   1,020,888/2,215,728 = 2,215,728/x
3. Step 3: Cross multiply
   1,020,888x = 2,215,728 × 2,215,728
4. Step 4: Simplify right side
   1,020,888x = 4,909,450,569,984
5. Step 5: Solve for x
   x = 4,909,450,569,984/1,020,888
6. Step 6: Final answer
   x = 4,809,000.17