Finding the Third Proportional to 238,626 and 492,318

Step by Step Solution

1. Step 1: Write the proportion equation
   238,626 : 492,318 = 492,318 : x
2. Step 2: Convert to fraction form
   238,626/492,318 = 492,318/x
3. Step 3: Cross multiply
   238,626x = 492,318 × 492,318
4. Step 4: Simplify right side
   238,626x = 242,377,013,124
5. Step 5: Solve for x
   x = 242,377,013,124/238,626
6. Step 6: Final answer
   x = 1,015,719.21