Finding the Third Proportional to 30,256.88 and 70,311.38

Step by Step Solution

1. Step 1: Write the proportion equation
   30,256.88 : 70,311.38 = 70,311.38 : x
2. Step 2: Convert to fraction form
   30,256.88/70,311.38 = 70,311.38/x
3. Step 3: Cross multiply
   30,256.88x = 70,311.38 × 70,311.38
4. Step 4: Simplify right side
   30,256.88x = 4,943,689,454.39
5. Step 5: Solve for x
   x = 4,943,689,454.39/30,256.88
6. Step 6: Final answer
   x = 163,390.62