Finding the Third Proportional to 63,715.50 and 137,799

Step by Step Solution

1. Step 1: Write the proportion equation
   63,715.50 : 137,799 = 137,799 : x
2. Step 2: Convert to fraction form
   63,715.50/137,799 = 137,799/x
3. Step 3: Cross multiply
   63,715.50x = 137,799 × 137,799
4. Step 4: Simplify right side
   63,715.50x = 18,988,564,401
5. Step 5: Solve for x
   x = 18,988,564,401/63,715.50
6. Step 6: Final answer
   x = 298,021.12