Finding the Third Proportional to 30,520.55 and 65,975.77

Step by Step Solution

1. Step 1: Write the proportion equation
   30,520.55 : 65,975.77 = 65,975.77 : x
2. Step 2: Convert to fraction form
   30,520.55/65,975.77 = 65,975.77/x
3. Step 3: Cross multiply
   30,520.55x = 65,975.77 × 65,975.77
4. Step 4: Simplify right side
   30,520.55x = 4,352,801,649.80
5. Step 5: Solve for x
   x = 4,352,801,649.80/30,520.55
6. Step 6: Final answer
   x = 142,618.73