Finding the Third Proportional to 30,513 and 62,908.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,513 : 62,908.50 = 62,908.50 : x
2. Step 2: Convert to fraction form
   30,513/62,908.50 = 62,908.50/x
3. Step 3: Cross multiply
   30,513x = 62,908.50 × 62,908.50
4. Step 4: Simplify right side
   30,513x = 3,957,479,372.25
5. Step 5: Solve for x
   x = 3,957,479,372.25/30,513
6. Step 6: Final answer
   x = 129,698.14