Finding the Third Proportional to 154,578 and 245,893.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,578 : 245,893.50 = 245,893.50 : x
2. Step 2: Convert to fraction form
   154,578/245,893.50 = 245,893.50/x
3. Step 3: Cross multiply
   154,578x = 245,893.50 × 245,893.50
4. Step 4: Simplify right side
   154,578x = 60,463,613,342.25
5. Step 5: Solve for x
   x = 60,463,613,342.25/154,578
6. Step 6: Final answer
   x = 391,152.77