Finding the Third Proportional to 28,713 and 60,905

Step by Step Solution

1. Step 1: Write the proportion equation
   28,713 : 60,905 = 60,905 : x
2. Step 2: Convert to fraction form
   28,713/60,905 = 60,905/x
3. Step 3: Cross multiply
   28,713x = 60,905 × 60,905
4. Step 4: Simplify right side
   28,713x = 3,709,419,025
5. Step 5: Solve for x
   x = 3,709,419,025/28,713
6. Step 6: Final answer
   x = 129,189.53