Finding the Third Proportional to 40,007.25 and 53,689.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,007.25 : 53,689.50 = 53,689.50 : x
2. Step 2: Convert to fraction form
   40,007.25/53,689.50 = 53,689.50/x
3. Step 3: Cross multiply
   40,007.25x = 53,689.50 × 53,689.50
4. Step 4: Simplify right side
   40,007.25x = 2,882,562,410.25
5. Step 5: Solve for x
   x = 2,882,562,410.25/40,007.25
6. Step 6: Final answer
   x = 72,051.00