Finding the Third Proportional to 320,508 and 700,552.50

Step by Step Solution

1. Step 1: Write the proportion equation
   320,508 : 700,552.50 = 700,552.50 : x
2. Step 2: Convert to fraction form
   320,508/700,552.50 = 700,552.50/x
3. Step 3: Cross multiply
   320,508x = 700,552.50 × 700,552.50
4. Step 4: Simplify right side
   320,508x = 490,773,805,256.25
5. Step 5: Solve for x
   x = 490,773,805,256.25/320,508
6. Step 6: Final answer
   x = 1,531,237.30