Finding the Third Proportional to 64,670 and 142,936

Step by Step Solution

1. Step 1: Write the proportion equation
   64,670 : 142,936 = 142,936 : x
2. Step 2: Convert to fraction form
   64,670/142,936 = 142,936/x
3. Step 3: Cross multiply
   64,670x = 142,936 × 142,936
4. Step 4: Simplify right side
   64,670x = 20,430,700,096
5. Step 5: Solve for x
   x = 20,430,700,096/64,670
6. Step 6: Final answer
   x = 315,922.38