Finding the Third Proportional to 25,639.88 and 53,870.91

Step by Step Solution

1. Step 1: Write the proportion equation
   25,639.88 : 53,870.91 = 53,870.91 : x
2. Step 2: Convert to fraction form
   25,639.88/53,870.91 = 53,870.91/x
3. Step 3: Cross multiply
   25,639.88x = 53,870.91 × 53,870.91
4. Step 4: Simplify right side
   25,639.88x = 2,902,074,540.20
5. Step 5: Solve for x
   x = 2,902,074,540.20/25,639.88
6. Step 6: Final answer
   x = 113,185.99