Finding the Third Proportional to 154,783.69 and 206,398.69

Step by Step Solution

1. Step 1: Write the proportion equation
   154,783.69 : 206,398.69 = 206,398.69 : x
2. Step 2: Convert to fraction form
   154,783.69/206,398.69 = 206,398.69/x
3. Step 3: Cross multiply
   154,783.69x = 206,398.69 × 206,398.69
4. Step 4: Simplify right side
   154,783.69x = 42,600,418,201.72
5. Step 5: Solve for x
   x = 42,600,418,201.72/154,783.69
6. Step 6: Final answer
   x = 275,225.50