Finding the Third Proportional to 988,570 and 2,158,356

Step by Step Solution

1. Step 1: Write the proportion equation
   988,570 : 2,158,356 = 2,158,356 : x
2. Step 2: Convert to fraction form
   988,570/2,158,356 = 2,158,356/x
3. Step 3: Cross multiply
   988,570x = 2,158,356 × 2,158,356
4. Step 4: Simplify right side
   988,570x = 4,658,500,622,736
5. Step 5: Solve for x
   x = 4,658,500,622,736/988,570
6. Step 6: Final answer
   x = 4,712,362.93