Finding the Third Proportional to 139,344 and 296,670

Step by Step Solution

1. Step 1: Write the proportion equation
   139,344 : 296,670 = 296,670 : x
2. Step 2: Convert to fraction form
   139,344/296,670 = 296,670/x
3. Step 3: Cross multiply
   139,344x = 296,670 × 296,670
4. Step 4: Simplify right side
   139,344x = 88,013,088,900
5. Step 5: Solve for x
   x = 88,013,088,900/139,344
6. Step 6: Final answer
   x = 631,624.53