Finding the Third Proportional to 63,913.50 and 138,404.25

Step by Step Solution

1. Step 1: Write the proportion equation
   63,913.50 : 138,404.25 = 138,404.25 : x
2. Step 2: Convert to fraction form
   63,913.50/138,404.25 = 138,404.25/x
3. Step 3: Cross multiply
   63,913.50x = 138,404.25 × 138,404.25
4. Step 4: Simplify right side
   63,913.50x = 19,155,736,418.06
5. Step 5: Solve for x
   x = 19,155,736,418.06/63,913.50
6. Step 6: Final answer
   x = 299,713.46