Finding the Third Proportional to 55,172 and 82,740

Step by Step Solution

1. Step 1: Write the proportion equation
   55,172 : 82,740 = 82,740 : x
2. Step 2: Convert to fraction form
   55,172/82,740 = 82,740/x
3. Step 3: Cross multiply
   55,172x = 82,740 × 82,740
4. Step 4: Simplify right side
   55,172x = 6,845,907,600
5. Step 5: Solve for x
   x = 6,845,907,600/55,172
6. Step 6: Final answer
   x = 124,083.01