Finding the Third Proportional to 30,620 and 65,614.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,620 : 65,614.50 = 65,614.50 : x
2. Step 2: Convert to fraction form
   30,620/65,614.50 = 65,614.50/x
3. Step 3: Cross multiply
   30,620x = 65,614.50 × 65,614.50
4. Step 4: Simplify right side
   30,620x = 4,305,262,610.25
5. Step 5: Solve for x
   x = 4,305,262,610.25/30,620
6. Step 6: Final answer
   x = 140,602.96