Finding the Third Proportional to 30,119.63 and 65,603.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,119.63 : 65,603.25 = 65,603.25 : x
2. Step 2: Convert to fraction form
   30,119.63/65,603.25 = 65,603.25/x
3. Step 3: Cross multiply
   30,119.63x = 65,603.25 × 65,603.25
4. Step 4: Simplify right side
   30,119.63x = 4,303,786,410.56
5. Step 5: Solve for x
   x = 4,303,786,410.56/30,119.63
6. Step 6: Final answer
   x = 142,889.77