Finding the Third Proportional to 988,692 and 2,158,608

Step by Step Solution

1. Step 1: Write the proportion equation
   988,692 : 2,158,608 = 2,158,608 : x
2. Step 2: Convert to fraction form
   988,692/2,158,608 = 2,158,608/x
3. Step 3: Cross multiply
   988,692x = 2,158,608 × 2,158,608
4. Step 4: Simplify right side
   988,692x = 4,659,588,497,664
5. Step 5: Solve for x
   x = 4,659,588,497,664/988,692
6. Step 6: Final answer
   x = 4,712,881.76