Finding the Third Proportional to 30,243 and 42,309.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,243 : 42,309.75 = 42,309.75 : x
2. Step 2: Convert to fraction form
   30,243/42,309.75 = 42,309.75/x
3. Step 3: Cross multiply
   30,243x = 42,309.75 × 42,309.75
4. Step 4: Simplify right side
   30,243x = 1,790,114,945.06
5. Step 5: Solve for x
   x = 1,790,114,945.06/30,243
6. Step 6: Final answer
   x = 59,191.05