Finding the Third Proportional to 320,503 and 700,541.25

Step by Step Solution

1. Step 1: Write the proportion equation
   320,503 : 700,541.25 = 700,541.25 : x
2. Step 2: Convert to fraction form
   320,503/700,541.25 = 700,541.25/x
3. Step 3: Cross multiply
   320,503x = 700,541.25 × 700,541.25
4. Step 4: Simplify right side
   320,503x = 490,758,042,951.56
5. Step 5: Solve for x
   x = 490,758,042,951.56/320,503
6. Step 6: Final answer
   x = 1,531,212.01