Finding the Third Proportional to 320,359 and 704,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   320,359 : 704,667.50 = 704,667.50 : x
2. Step 2: Convert to fraction form
   320,359/704,667.50 = 704,667.50/x
3. Step 3: Cross multiply
   320,359x = 704,667.50 × 704,667.50
4. Step 4: Simplify right side
   320,359x = 496,556,285,556.25
5. Step 5: Solve for x
   x = 496,556,285,556.25/320,359
6. Step 6: Final answer
   x = 1,549,999.49