Finding the Third Proportional to 71,431.50 and 153,816

Step by Step Solution

1. Step 1: Write the proportion equation
   71,431.50 : 153,816 = 153,816 : x
2. Step 2: Convert to fraction form
   71,431.50/153,816 = 153,816/x
3. Step 3: Cross multiply
   71,431.50x = 153,816 × 153,816
4. Step 4: Simplify right side
   71,431.50x = 23,659,361,856
5. Step 5: Solve for x
   x = 23,659,361,856/71,431.50
6. Step 6: Final answer
   x = 331,217.49