Finding the Third Proportional to 296,388 and 439,436.25

Step by Step Solution

1. Step 1: Write the proportion equation
   296,388 : 439,436.25 = 439,436.25 : x
2. Step 2: Convert to fraction form
   296,388/439,436.25 = 439,436.25/x
3. Step 3: Cross multiply
   296,388x = 439,436.25 × 439,436.25
4. Step 4: Simplify right side
   296,388x = 193,104,217,814.06
5. Step 5: Solve for x
   x = 193,104,217,814.06/296,388
6. Step 6: Final answer
   x = 651,525.09