Finding the Third Proportional to 637,378 and 978,350

Step by Step Solution

1. Step 1: Write the proportion equation
   637,378 : 978,350 = 978,350 : x
2. Step 2: Convert to fraction form
   637,378/978,350 = 978,350/x
3. Step 3: Cross multiply
   637,378x = 978,350 × 978,350
4. Step 4: Simplify right side
   637,378x = 957,168,722,500
5. Step 5: Solve for x
   x = 957,168,722,500/637,378
6. Step 6: Final answer
   x = 1,501,728.52