Finding the Third Proportional to 78,948.42 and 173,659.57

Step by Step Solution

1. Step 1: Write the proportion equation
   78,948.42 : 173,659.57 = 173,659.57 : x
2. Step 2: Convert to fraction form
   78,948.42/173,659.57 = 173,659.57/x
3. Step 3: Cross multiply
   78,948.42x = 173,659.57 × 173,659.57
4. Step 4: Simplify right side
   78,948.42x = 30,157,646,361.12
5. Step 5: Solve for x
   x = 30,157,646,361.12/78,948.42
6. Step 6: Final answer
   x = 381,991.76