Finding the Third Proportional to 154,316.50 and 315,783.38

Step by Step Solution

1. Step 1: Write the proportion equation
   154,316.50 : 315,783.38 = 315,783.38 : x
2. Step 2: Convert to fraction form
   154,316.50/315,783.38 = 315,783.38/x
3. Step 3: Cross multiply
   154,316.50x = 315,783.38 × 315,783.38
4. Step 4: Simplify right side
   154,316.50x = 99,719,139,926.39
5. Step 5: Solve for x
   x = 99,719,139,926.39/154,316.50
6. Step 6: Final answer
   x = 646,198.82