Finding the Third Proportional to 320,889 and 498,883.50

Step by Step Solution

1. Step 1: Write the proportion equation
   320,889 : 498,883.50 = 498,883.50 : x
2. Step 2: Convert to fraction form
   320,889/498,883.50 = 498,883.50/x
3. Step 3: Cross multiply
   320,889x = 498,883.50 × 498,883.50
4. Step 4: Simplify right side
   320,889x = 248,884,746,572.25
5. Step 5: Solve for x
   x = 248,884,746,572.25/320,889
6. Step 6: Final answer
   x = 775,610.09