Finding the Third Proportional to 178,513.88 and 389,627.72

Step by Step Solution

1. Step 1: Write the proportion equation
   178,513.88 : 389,627.72 = 389,627.72 : x
2. Step 2: Convert to fraction form
   178,513.88/389,627.72 = 389,627.72/x
3. Step 3: Cross multiply
   178,513.88x = 389,627.72 × 389,627.72
4. Step 4: Simplify right side
   178,513.88x = 151,809,759,218.33
5. Step 5: Solve for x
   x = 151,809,759,218.33/178,513.88
6. Step 6: Final answer
   x = 850,408.74