Finding the Third Proportional to 159,390 and 328,126.50

Step by Step Solution

1. Step 1: Write the proportion equation
   159,390 : 328,126.50 = 328,126.50 : x
2. Step 2: Convert to fraction form
   159,390/328,126.50 = 328,126.50/x
3. Step 3: Cross multiply
   159,390x = 328,126.50 × 328,126.50
4. Step 4: Simplify right side
   159,390x = 107,667,000,002.25
5. Step 5: Solve for x
   x = 107,667,000,002.25/159,390
6. Step 6: Final answer
   x = 675,494.07