Finding the Third Proportional to 151,648.50 and 221,998.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,648.50 : 221,998.50 = 221,998.50 : x
2. Step 2: Convert to fraction form
   151,648.50/221,998.50 = 221,998.50/x
3. Step 3: Cross multiply
   151,648.50x = 221,998.50 × 221,998.50
4. Step 4: Simplify right side
   151,648.50x = 49,283,334,002.25
5. Step 5: Solve for x
   x = 49,283,334,002.25/151,648.50
6. Step 6: Final answer
   x = 324,983.99