Finding the Third Proportional to 38,872.69 and 55,051.31

Step by Step Solution

1. Step 1: Write the proportion equation
   38,872.69 : 55,051.31 = 55,051.31 : x
2. Step 2: Convert to fraction form
   38,872.69/55,051.31 = 55,051.31/x
3. Step 3: Cross multiply
   38,872.69x = 55,051.31 × 55,051.31
4. Step 4: Simplify right side
   38,872.69x = 3,030,647,007.97
5. Step 5: Solve for x
   x = 3,030,647,007.97/38,872.69
6. Step 6: Final answer
   x = 77,963.40