Finding the Third Proportional to 70,719 and 100,245

Step by Step Solution

1. Step 1: Write the proportion equation
   70,719 : 100,245 = 100,245 : x
2. Step 2: Convert to fraction form
   70,719/100,245 = 100,245/x
3. Step 3: Cross multiply
   70,719x = 100,245 × 100,245
4. Step 4: Simplify right side
   70,719x = 10,049,060,025
5. Step 5: Solve for x
   x = 10,049,060,025/70,719
6. Step 6: Final answer
   x = 142,098.45