Finding the Third Proportional to 200,819.50 and 434,700

Step by Step Solution

1. Step 1: Write the proportion equation
   200,819.50 : 434,700 = 434,700 : x
2. Step 2: Convert to fraction form
   200,819.50/434,700 = 434,700/x
3. Step 3: Cross multiply
   200,819.50x = 434,700 × 434,700
4. Step 4: Simplify right side
   200,819.50x = 188,964,090,000
5. Step 5: Solve for x
   x = 188,964,090,000/200,819.50
6. Step 6: Final answer
   x = 940,964.85