Finding the Third Proportional to 71,399.25 and 105,018.75

Step by Step Solution

1. Step 1: Write the proportion equation
   71,399.25 : 105,018.75 = 105,018.75 : x
2. Step 2: Convert to fraction form
   71,399.25/105,018.75 = 105,018.75/x
3. Step 3: Cross multiply
   71,399.25x = 105,018.75 × 105,018.75
4. Step 4: Simplify right side
   71,399.25x = 11,028,937,851.56
5. Step 5: Solve for x
   x = 11,028,937,851.56/71,399.25
6. Step 6: Final answer
   x = 154,468.54