Finding the Third Proportional to 64,872 and 140,818

Step by Step Solution

1. Step 1: Write the proportion equation
   64,872 : 140,818 = 140,818 : x
2. Step 2: Convert to fraction form
   64,872/140,818 = 140,818/x
3. Step 3: Cross multiply
   64,872x = 140,818 × 140,818
4. Step 4: Simplify right side
   64,872x = 19,829,709,124
5. Step 5: Solve for x
   x = 19,829,709,124/64,872
6. Step 6: Final answer
   x = 305,674.39