Finding the Third Proportional to 85,429.50 and 199,599

Step by Step Solution

1. Step 1: Write the proportion equation
   85,429.50 : 199,599 = 199,599 : x
2. Step 2: Convert to fraction form
   85,429.50/199,599 = 199,599/x
3. Step 3: Cross multiply
   85,429.50x = 199,599 × 199,599
4. Step 4: Simplify right side
   85,429.50x = 39,839,760,801
5. Step 5: Solve for x
   x = 39,839,760,801/85,429.50
6. Step 6: Final answer
   x = 466,346.65