Finding the Third Proportional to 294,064 and 637,907.50

Step by Step Solution

1. Step 1: Write the proportion equation
   294,064 : 637,907.50 = 637,907.50 : x
2. Step 2: Convert to fraction form
   294,064/637,907.50 = 637,907.50/x
3. Step 3: Cross multiply
   294,064x = 637,907.50 × 637,907.50
4. Step 4: Simplify right side
   294,064x = 406,925,978,556.25
5. Step 5: Solve for x
   x = 406,925,978,556.25/294,064
6. Step 6: Final answer
   x = 1,383,800.73