Finding the Third Proportional to 68,972.50 and 150,864.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,972.50 : 150,864.50 = 150,864.50 : x
2. Step 2: Convert to fraction form
   68,972.50/150,864.50 = 150,864.50/x
3. Step 3: Cross multiply
   68,972.50x = 150,864.50 × 150,864.50
4. Step 4: Simplify right side
   68,972.50x = 22,760,097,360.25
5. Step 5: Solve for x
   x = 22,760,097,360.25/68,972.50
6. Step 6: Final answer
   x = 329,988.00