Finding the Third Proportional to 63,715.50 and 138,507

Step by Step Solution

1. Step 1: Write the proportion equation
   63,715.50 : 138,507 = 138,507 : x
2. Step 2: Convert to fraction form
   63,715.50/138,507 = 138,507/x
3. Step 3: Cross multiply
   63,715.50x = 138,507 × 138,507
4. Step 4: Simplify right side
   63,715.50x = 19,184,189,049
5. Step 5: Solve for x
   x = 19,184,189,049/63,715.50
6. Step 6: Final answer
   x = 301,091.40