Finding the Third Proportional to 28,239 and 60,978

Step by Step Solution

1. Step 1: Write the proportion equation
   28,239 : 60,978 = 60,978 : x
2. Step 2: Convert to fraction form
   28,239/60,978 = 60,978/x
3. Step 3: Cross multiply
   28,239x = 60,978 × 60,978
4. Step 4: Simplify right side
   28,239x = 3,718,316,484
5. Step 5: Solve for x
   x = 3,718,316,484/28,239
6. Step 6: Final answer
   x = 131,673.09