Finding the Third Proportional to 136,642.50 and 206,874

Step by Step Solution

1. Step 1: Write the proportion equation
   136,642.50 : 206,874 = 206,874 : x
2. Step 2: Convert to fraction form
   136,642.50/206,874 = 206,874/x
3. Step 3: Cross multiply
   136,642.50x = 206,874 × 206,874
4. Step 4: Simplify right side
   136,642.50x = 42,796,851,876
5. Step 5: Solve for x
   x = 42,796,851,876/136,642.50
6. Step 6: Final answer
   x = 313,203.08