Finding the Third Proportional to 39,072.75 and 80,915.25

Step by Step Solution

1. Step 1: Write the proportion equation
   39,072.75 : 80,915.25 = 80,915.25 : x
2. Step 2: Convert to fraction form
   39,072.75/80,915.25 = 80,915.25/x
3. Step 3: Cross multiply
   39,072.75x = 80,915.25 × 80,915.25
4. Step 4: Simplify right side
   39,072.75x = 6,547,277,682.56
5. Step 5: Solve for x
   x = 6,547,277,682.56/39,072.75
6. Step 6: Final answer
   x = 167,566.34