Finding the Third Proportional to 301,574.81 and 649,485

Step by Step Solution

1. Step 1: Write the proportion equation
   301,574.81 : 649,485 = 649,485 : x
2. Step 2: Convert to fraction form
   301,574.81/649,485 = 649,485/x
3. Step 3: Cross multiply
   301,574.81x = 649,485 × 649,485
4. Step 4: Simplify right side
   301,574.81x = 421,830,765,225
5. Step 5: Solve for x
   x = 421,830,765,225/301,574.81
6. Step 6: Final answer
   x = 1,398,759.94