Finding the Third Proportional to 30,278.25 and 65,659.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,278.25 : 65,659.50 = 65,659.50 : x
2. Step 2: Convert to fraction form
   30,278.25/65,659.50 = 65,659.50/x
3. Step 3: Cross multiply
   30,278.25x = 65,659.50 × 65,659.50
4. Step 4: Simplify right side
   30,278.25x = 4,311,169,940.25
5. Step 5: Solve for x
   x = 4,311,169,940.25/30,278.25
6. Step 6: Final answer
   x = 142,385.04