Finding the Third Proportional to 30,680 and 62,650

Step by Step Solution

1. Step 1: Write the proportion equation
   30,680 : 62,650 = 62,650 : x
2. Step 2: Convert to fraction form
   30,680/62,650 = 62,650/x
3. Step 3: Cross multiply
   30,680x = 62,650 × 62,650
4. Step 4: Simplify right side
   30,680x = 3,925,022,500
5. Step 5: Solve for x
   x = 3,925,022,500/30,680
6. Step 6: Final answer
   x = 127,934.24