Finding the Third Proportional to 53,161.50 and 72,231

Step by Step Solution

1. Step 1: Write the proportion equation
   53,161.50 : 72,231 = 72,231 : x
2. Step 2: Convert to fraction form
   53,161.50/72,231 = 72,231/x
3. Step 3: Cross multiply
   53,161.50x = 72,231 × 72,231
4. Step 4: Simplify right side
   53,161.50x = 5,217,317,361
5. Step 5: Solve for x
   x = 5,217,317,361/53,161.50
6. Step 6: Final answer
   x = 98,140.90