Finding the Third Proportional to 28,978 and 61,069

Step by Step Solution

1. Step 1: Write the proportion equation
   28,978 : 61,069 = 61,069 : x
2. Step 2: Convert to fraction form
   28,978/61,069 = 61,069/x
3. Step 3: Cross multiply
   28,978x = 61,069 × 61,069
4. Step 4: Simplify right side
   28,978x = 3,729,422,761
5. Step 5: Solve for x
   x = 3,729,422,761/28,978
6. Step 6: Final answer
   x = 128,698.42