Finding the Third Proportional to 63,389 and 137,723.50

Step by Step Solution

1. Step 1: Write the proportion equation
   63,389 : 137,723.50 = 137,723.50 : x
2. Step 2: Convert to fraction form
   63,389/137,723.50 = 137,723.50/x
3. Step 3: Cross multiply
   63,389x = 137,723.50 × 137,723.50
4. Step 4: Simplify right side
   63,389x = 18,967,762,452.25
5. Step 5: Solve for x
   x = 18,967,762,452.25/63,389
6. Step 6: Final answer
   x = 299,227.98