Finding the Third Proportional to 34,399 and 70,256

Step by Step Solution

1. Step 1: Write the proportion equation
   34,399 : 70,256 = 70,256 : x
2. Step 2: Convert to fraction form
   34,399/70,256 = 70,256/x
3. Step 3: Cross multiply
   34,399x = 70,256 × 70,256
4. Step 4: Simplify right side
   34,399x = 4,935,905,536
5. Step 5: Solve for x
   x = 4,935,905,536/34,399
6. Step 6: Final answer
   x = 143,489.80