Finding the Third Proportional to 64,898 and 140,812

Step by Step Solution

1. Step 1: Write the proportion equation
   64,898 : 140,812 = 140,812 : x
2. Step 2: Convert to fraction form
   64,898/140,812 = 140,812/x
3. Step 3: Cross multiply
   64,898x = 140,812 × 140,812
4. Step 4: Simplify right side
   64,898x = 19,828,019,344
5. Step 5: Solve for x
   x = 19,828,019,344/64,898
6. Step 6: Final answer
   x = 305,525.89