Finding the Third Proportional to 308,406 and 483,907.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,406 : 483,907.50 = 483,907.50 : x
2. Step 2: Convert to fraction form
   308,406/483,907.50 = 483,907.50/x
3. Step 3: Cross multiply
   308,406x = 483,907.50 × 483,907.50
4. Step 4: Simplify right side
   308,406x = 234,166,468,556.25
5. Step 5: Solve for x
   x = 234,166,468,556.25/308,406
6. Step 6: Final answer
   x = 759,279.87