Finding the Third Proportional to 438,208.73 and 660,196.83

Step by Step Solution

1. Step 1: Write the proportion equation
   438,208.73 : 660,196.83 = 660,196.83 : x
2. Step 2: Convert to fraction form
   438,208.73/660,196.83 = 660,196.83/x
3. Step 3: Cross multiply
   438,208.73x = 660,196.83 × 660,196.83
4. Step 4: Simplify right side
   438,208.73x = 435,859,851,866.31
5. Step 5: Solve for x
   x = 435,859,851,866.31/438,208.73
6. Step 6: Final answer
   x = 994,639.81