Finding the Third Proportional to 55,400 and 83,676

Step by Step Solution

1. Step 1: Write the proportion equation
   55,400 : 83,676 = 83,676 : x
2. Step 2: Convert to fraction form
   55,400/83,676 = 83,676/x
3. Step 3: Cross multiply
   55,400x = 83,676 × 83,676
4. Step 4: Simplify right side
   55,400x = 7,001,672,976
5. Step 5: Solve for x
   x = 7,001,672,976/55,400
6. Step 6: Final answer
   x = 126,383.99