Finding the Third Proportional to 320,835 and 697,093.50

Step by Step Solution

1. Step 1: Write the proportion equation
   320,835 : 697,093.50 = 697,093.50 : x
2. Step 2: Convert to fraction form
   320,835/697,093.50 = 697,093.50/x
3. Step 3: Cross multiply
   320,835x = 697,093.50 × 697,093.50
4. Step 4: Simplify right side
   320,835x = 485,939,347,742.25
5. Step 5: Solve for x
   x = 485,939,347,742.25/320,835
6. Step 6: Final answer
   x = 1,514,608.28