Finding the Third Proportional to 199,678.50 and 434,349

Step by Step Solution

1. Step 1: Write the proportion equation
   199,678.50 : 434,349 = 434,349 : x
2. Step 2: Convert to fraction form
   199,678.50/434,349 = 434,349/x
3. Step 3: Cross multiply
   199,678.50x = 434,349 × 434,349
4. Step 4: Simplify right side
   199,678.50x = 188,659,053,801
5. Step 5: Solve for x
   x = 188,659,053,801/199,678.50
6. Step 6: Final answer
   x = 944,814.06