Finding the Third Proportional to 65,503.69 and 71,092.69

Step by Step Solution

1. Step 1: Write the proportion equation
   65,503.69 : 71,092.69 = 71,092.69 : x
2. Step 2: Convert to fraction form
   65,503.69/71,092.69 = 71,092.69/x
3. Step 3: Cross multiply
   65,503.69x = 71,092.69 × 71,092.69
4. Step 4: Simplify right side
   65,503.69x = 5,054,170,215.97
5. Step 5: Solve for x
   x = 5,054,170,215.97/65,503.69
6. Step 6: Final answer
   x = 77,158.56