Finding the Third Proportional to 68,509.50 and 150,111

Step by Step Solution

1. Step 1: Write the proportion equation
   68,509.50 : 150,111 = 150,111 : x
2. Step 2: Convert to fraction form
   68,509.50/150,111 = 150,111/x
3. Step 3: Cross multiply
   68,509.50x = 150,111 × 150,111
4. Step 4: Simplify right side
   68,509.50x = 22,533,312,321
5. Step 5: Solve for x
   x = 22,533,312,321/68,509.50
6. Step 6: Final answer
   x = 328,907.85