Finding the Third Proportional to 144,822.09 and 216,412.59

Step by Step Solution

1. Step 1: Write the proportion equation
   144,822.09 : 216,412.59 = 216,412.59 : x
2. Step 2: Convert to fraction form
   144,822.09/216,412.59 = 216,412.59/x
3. Step 3: Cross multiply
   144,822.09x = 216,412.59 × 216,412.59
4. Step 4: Simplify right side
   144,822.09x = 46,834,410,733.60
5. Step 5: Solve for x
   x = 46,834,410,733.60/144,822.09
6. Step 6: Final answer
   x = 323,392.72