Finding the Third Proportional to 77,105.25 and 115,018

Step by Step Solution

1. Step 1: Write the proportion equation
   77,105.25 : 115,018 = 115,018 : x
2. Step 2: Convert to fraction form
   77,105.25/115,018 = 115,018/x
3. Step 3: Cross multiply
   77,105.25x = 115,018 × 115,018
4. Step 4: Simplify right side
   77,105.25x = 13,229,140,324
5. Step 5: Solve for x
   x = 13,229,140,324/77,105.25
6. Step 6: Final answer
   x = 171,572.50