Finding the Third Proportional to 30,719.25 and 64,530

Step by Step Solution

1. Step 1: Write the proportion equation
   30,719.25 : 64,530 = 64,530 : x
2. Step 2: Convert to fraction form
   30,719.25/64,530 = 64,530/x
3. Step 3: Cross multiply
   30,719.25x = 64,530 × 64,530
4. Step 4: Simplify right side
   30,719.25x = 4,164,120,900
5. Step 5: Solve for x
   x = 4,164,120,900/30,719.25
6. Step 6: Final answer
   x = 135,554.12