Finding the Third Proportional to 30,067.50 and 64,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,067.50 : 64,981.50 = 64,981.50 : x
2. Step 2: Convert to fraction form
   30,067.50/64,981.50 = 64,981.50/x
3. Step 3: Cross multiply
   30,067.50x = 64,981.50 × 64,981.50
4. Step 4: Simplify right side
   30,067.50x = 4,222,595,342.25
5. Step 5: Solve for x
   x = 4,222,595,342.25/30,067.50
6. Step 6: Final answer
   x = 140,437.19