Finding the Third Proportional to 320,437 and 483,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   320,437 : 483,111.50 = 483,111.50 : x
2. Step 2: Convert to fraction form
   320,437/483,111.50 = 483,111.50/x
3. Step 3: Cross multiply
   320,437x = 483,111.50 × 483,111.50
4. Step 4: Simplify right side
   320,437x = 233,396,721,432.25
5. Step 5: Solve for x
   x = 233,396,721,432.25/320,437
6. Step 6: Final answer
   x = 728,370.07