Finding the Third Proportional to 30,576.75 and 64,469.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,576.75 : 64,469.25 = 64,469.25 : x
2. Step 2: Convert to fraction form
   30,576.75/64,469.25 = 64,469.25/x
3. Step 3: Cross multiply
   30,576.75x = 64,469.25 × 64,469.25
4. Step 4: Simplify right side
   30,576.75x = 4,156,284,195.56
5. Step 5: Solve for x
   x = 4,156,284,195.56/30,576.75
6. Step 6: Final answer
   x = 135,929.56