Finding the Third Proportional to 25,431.75 and 55,418.63

Step by Step Solution

1. Step 1: Write the proportion equation
   25,431.75 : 55,418.63 = 55,418.63 : x
2. Step 2: Convert to fraction form
   25,431.75/55,418.63 = 55,418.63/x
3. Step 3: Cross multiply
   25,431.75x = 55,418.63 × 55,418.63
4. Step 4: Simplify right side
   25,431.75x = 3,071,223,996.89
5. Step 5: Solve for x
   x = 3,071,223,996.89/25,431.75
6. Step 6: Final answer
   x = 120,763.38