Finding the Third Proportional to 30,672 and 65,711.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,672 : 65,711.25 = 65,711.25 : x
2. Step 2: Convert to fraction form
   30,672/65,711.25 = 65,711.25/x
3. Step 3: Cross multiply
   30,672x = 65,711.25 × 65,711.25
4. Step 4: Simplify right side
   30,672x = 4,317,968,376.56
5. Step 5: Solve for x
   x = 4,317,968,376.56/30,672
6. Step 6: Final answer
   x = 140,778.83