Finding the Third Proportional to 57,479 and 84,030

Step by Step Solution

1. Step 1: Write the proportion equation
   57,479 : 84,030 = 84,030 : x
2. Step 2: Convert to fraction form
   57,479/84,030 = 84,030/x
3. Step 3: Cross multiply
   57,479x = 84,030 × 84,030
4. Step 4: Simplify right side
   57,479x = 7,061,040,900
5. Step 5: Solve for x
   x = 7,061,040,900/57,479
6. Step 6: Final answer
   x = 122,845.58