Finding the Third Proportional to 92,731.50 and 199,638

Step by Step Solution

1. Step 1: Write the proportion equation
   92,731.50 : 199,638 = 199,638 : x
2. Step 2: Convert to fraction form
   92,731.50/199,638 = 199,638/x
3. Step 3: Cross multiply
   92,731.50x = 199,638 × 199,638
4. Step 4: Simplify right side
   92,731.50x = 39,855,331,044
5. Step 5: Solve for x
   x = 39,855,331,044/92,731.50
6. Step 6: Final answer
   x = 429,792.80