Finding the Third Proportional to 28,978 and 61,071

Step by Step Solution

1. Step 1: Write the proportion equation
   28,978 : 61,071 = 61,071 : x
2. Step 2: Convert to fraction form
   28,978/61,071 = 61,071/x
3. Step 3: Cross multiply
   28,978x = 61,071 × 61,071
4. Step 4: Simplify right side
   28,978x = 3,729,667,041
5. Step 5: Solve for x
   x = 3,729,667,041/28,978
6. Step 6: Final answer
   x = 128,706.85