Finding the Third Proportional to 259,386 and 396,952.50

Step by Step Solution

1. Step 1: Write the proportion equation
   259,386 : 396,952.50 = 396,952.50 : x
2. Step 2: Convert to fraction form
   259,386/396,952.50 = 396,952.50/x
3. Step 3: Cross multiply
   259,386x = 396,952.50 × 396,952.50
4. Step 4: Simplify right side
   259,386x = 157,571,287,256.25
5. Step 5: Solve for x
   x = 157,571,287,256.25/259,386
6. Step 6: Final answer
   x = 607,478.00