Finding the Third Proportional to 68,170.50 and 145,818

Step by Step Solution

1. Step 1: Write the proportion equation
   68,170.50 : 145,818 = 145,818 : x
2. Step 2: Convert to fraction form
   68,170.50/145,818 = 145,818/x
3. Step 3: Cross multiply
   68,170.50x = 145,818 × 145,818
4. Step 4: Simplify right side
   68,170.50x = 21,262,889,124
5. Step 5: Solve for x
   x = 21,262,889,124/68,170.50
6. Step 6: Final answer
   x = 311,907.48