Finding the Third Proportional to 83,398 and 122,890

Step by Step Solution

1. Step 1: Write the proportion equation
   83,398 : 122,890 = 122,890 : x
2. Step 2: Convert to fraction form
   83,398/122,890 = 122,890/x
3. Step 3: Cross multiply
   83,398x = 122,890 × 122,890
4. Step 4: Simplify right side
   83,398x = 15,101,952,100
5. Step 5: Solve for x
   x = 15,101,952,100/83,398
6. Step 6: Final answer
   x = 181,082.90