Finding the Third Proportional to 118,540 and 173,309.63

Step by Step Solution

1. Step 1: Write the proportion equation
   118,540 : 173,309.63 = 173,309.63 : x
2. Step 2: Convert to fraction form
   118,540/173,309.63 = 173,309.63/x
3. Step 3: Cross multiply
   118,540x = 173,309.63 × 173,309.63
4. Step 4: Simplify right side
   118,540x = 30,036,226,117.64
5. Step 5: Solve for x
   x = 30,036,226,117.64/118,540
6. Step 6: Final answer
   x = 253,384.73