Finding the Third Proportional to 25,909.75 and 40,128.75

Step by Step Solution

1. Step 1: Write the proportion equation
   25,909.75 : 40,128.75 = 40,128.75 : x
2. Step 2: Convert to fraction form
   25,909.75/40,128.75 = 40,128.75/x
3. Step 3: Cross multiply
   25,909.75x = 40,128.75 × 40,128.75
4. Step 4: Simplify right side
   25,909.75x = 1,610,316,576.56
5. Step 5: Solve for x
   x = 1,610,316,576.56/25,909.75
6. Step 6: Final answer
   x = 62,150.99