Finding the Third Proportional to 17,978.63 and 25,143.75

Step by Step Solution

1. Step 1: Write the proportion equation
   17,978.63 : 25,143.75 = 25,143.75 : x
2. Step 2: Convert to fraction form
   17,978.63/25,143.75 = 25,143.75/x
3. Step 3: Cross multiply
   17,978.63x = 25,143.75 × 25,143.75
4. Step 4: Simplify right side
   17,978.63x = 632,208,164.06
5. Step 5: Solve for x
   x = 632,208,164.06/17,978.63
6. Step 6: Final answer
   x = 35,164.43