Finding the Third Proportional to 30,561.75 and 64,442.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,561.75 : 64,442.25 = 64,442.25 : x
2. Step 2: Convert to fraction form
   30,561.75/64,442.25 = 64,442.25/x
3. Step 3: Cross multiply
   30,561.75x = 64,442.25 × 64,442.25
4. Step 4: Simplify right side
   30,561.75x = 4,152,803,585.06
5. Step 5: Solve for x
   x = 4,152,803,585.06/30,561.75
6. Step 6: Final answer
   x = 135,882.39