Finding the Third Proportional to 30,320 and 70,817

Step by Step Solution

1. Step 1: Write the proportion equation
   30,320 : 70,817 = 70,817 : x
2. Step 2: Convert to fraction form
   30,320/70,817 = 70,817/x
3. Step 3: Cross multiply
   30,320x = 70,817 × 70,817
4. Step 4: Simplify right side
   30,320x = 5,015,047,489
5. Step 5: Solve for x
   x = 5,015,047,489/30,320
6. Step 6: Final answer
   x = 165,403.94