Finding the Third Proportional to 152,568.75 and 319,078.50

Step by Step Solution

1. Step 1: Write the proportion equation
   152,568.75 : 319,078.50 = 319,078.50 : x
2. Step 2: Convert to fraction form
   152,568.75/319,078.50 = 319,078.50/x
3. Step 3: Cross multiply
   152,568.75x = 319,078.50 × 319,078.50
4. Step 4: Simplify right side
   152,568.75x = 101,811,089,162.25
5. Step 5: Solve for x
   x = 101,811,089,162.25/152,568.75
6. Step 6: Final answer
   x = 667,312.86