Finding the Third Proportional to 30,872.25 and 67,452.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,872.25 : 67,452.75 = 67,452.75 : x
2. Step 2: Convert to fraction form
   30,872.25/67,452.75 = 67,452.75/x
3. Step 3: Cross multiply
   30,872.25x = 67,452.75 × 67,452.75
4. Step 4: Simplify right side
   30,872.25x = 4,549,873,482.56
5. Step 5: Solve for x
   x = 4,549,873,482.56/30,872.25
6. Step 6: Final answer
   x = 147,377.45