Finding the Third Proportional to 28,720 and 59,900

Step by Step Solution

1. Step 1: Write the proportion equation
   28,720 : 59,900 = 59,900 : x
2. Step 2: Convert to fraction form
   28,720/59,900 = 59,900/x
3. Step 3: Cross multiply
   28,720x = 59,900 × 59,900
4. Step 4: Simplify right side
   28,720x = 3,588,010,000
5. Step 5: Solve for x
   x = 3,588,010,000/28,720
6. Step 6: Final answer
   x = 124,930.71