Finding the Third Proportional to 328,296 and 705,631.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,296 : 705,631.50 = 705,631.50 : x
2. Step 2: Convert to fraction form
   328,296/705,631.50 = 705,631.50/x
3. Step 3: Cross multiply
   328,296x = 705,631.50 × 705,631.50
4. Step 4: Simplify right side
   328,296x = 497,915,813,792.25
5. Step 5: Solve for x
   x = 497,915,813,792.25/328,296
6. Step 6: Final answer
   x = 1,516,667.32