Finding the Third Proportional to 338,670 and 746,453.25

Step by Step Solution

1. Step 1: Write the proportion equation
   338,670 : 746,453.25 = 746,453.25 : x
2. Step 2: Convert to fraction form
   338,670/746,453.25 = 746,453.25/x
3. Step 3: Cross multiply
   338,670x = 746,453.25 × 746,453.25
4. Step 4: Simplify right side
   338,670x = 557,192,454,435.56
5. Step 5: Solve for x
   x = 557,192,454,435.56/338,670
6. Step 6: Final answer
   x = 1,645,237.12