Finding the Third Proportional to 637,825.50 and 978,700.50

Step by Step Solution

1. Step 1: Write the proportion equation
   637,825.50 : 978,700.50 = 978,700.50 : x
2. Step 2: Convert to fraction form
   637,825.50/978,700.50 = 978,700.50/x
3. Step 3: Cross multiply
   637,825.50x = 978,700.50 × 978,700.50
4. Step 4: Simplify right side
   637,825.50x = 957,854,668,700.25
5. Step 5: Solve for x
   x = 957,854,668,700.25/637,825.50
6. Step 6: Final answer
   x = 1,501,750.35