Finding the Third Proportional to 139,144 and 297,965

Step by Step Solution

1. Step 1: Write the proportion equation
   139,144 : 297,965 = 297,965 : x
2. Step 2: Convert to fraction form
   139,144/297,965 = 297,965/x
3. Step 3: Cross multiply
   139,144x = 297,965 × 297,965
4. Step 4: Simplify right side
   139,144x = 88,783,141,225
5. Step 5: Solve for x
   x = 88,783,141,225/139,144
6. Step 6: Final answer
   x = 638,066.62