Finding the Third Proportional to 133,358.50 and 206,356

Step by Step Solution

1. Step 1: Write the proportion equation
   133,358.50 : 206,356 = 206,356 : x
2. Step 2: Convert to fraction form
   133,358.50/206,356 = 206,356/x
3. Step 3: Cross multiply
   133,358.50x = 206,356 × 206,356
4. Step 4: Simplify right side
   133,358.50x = 42,582,798,736
5. Step 5: Solve for x
   x = 42,582,798,736/133,358.50
6. Step 6: Final answer
   x = 319,310.72