Finding the Third Proportional to 144,834 and 216,428.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,834 : 216,428.50 = 216,428.50 : x
2. Step 2: Convert to fraction form
   144,834/216,428.50 = 216,428.50/x
3. Step 3: Cross multiply
   144,834x = 216,428.50 × 216,428.50
4. Step 4: Simplify right side
   144,834x = 46,841,295,612.25
5. Step 5: Solve for x
   x = 46,841,295,612.25/144,834
6. Step 6: Final answer
   x = 323,413.67