Finding the Third Proportional to 30,865.75 and 67,629.63

Step by Step Solution

1. Step 1: Write the proportion equation
   30,865.75 : 67,629.63 = 67,629.63 : x
2. Step 2: Convert to fraction form
   30,865.75/67,629.63 = 67,629.63/x
3. Step 3: Cross multiply
   30,865.75x = 67,629.63 × 67,629.63
4. Step 4: Simplify right side
   30,865.75x = 4,573,766,177.64
5. Step 5: Solve for x
   x = 4,573,766,177.64/30,865.75
6. Step 6: Final answer
   x = 148,182.57