Finding the Third Proportional to 28,680.33 and 61,512.47

Step by Step Solution

1. Step 1: Write the proportion equation
   28,680.33 : 61,512.47 = 61,512.47 : x
2. Step 2: Convert to fraction form
   28,680.33/61,512.47 = 61,512.47/x
3. Step 3: Cross multiply
   28,680.33x = 61,512.47 × 61,512.47
4. Step 4: Simplify right side
   28,680.33x = 3,783,783,811.72
5. Step 5: Solve for x
   x = 3,783,783,811.72/28,680.33
6. Step 6: Final answer
   x = 131,929.59