Finding the Third Proportional to 63,663.50 and 138,740

Step by Step Solution

1. Step 1: Write the proportion equation
   63,663.50 : 138,740 = 138,740 : x
2. Step 2: Convert to fraction form
   63,663.50/138,740 = 138,740/x
3. Step 3: Cross multiply
   63,663.50x = 138,740 × 138,740
4. Step 4: Simplify right side
   63,663.50x = 19,248,787,600
5. Step 5: Solve for x
   x = 19,248,787,600/63,663.50
6. Step 6: Final answer
   x = 302,352.02