Finding the Third Proportional to 42,322.13 and 66,958.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,322.13 : 66,958.69 = 66,958.69 : x
2. Step 2: Convert to fraction form
   42,322.13/66,958.69 = 66,958.69/x
3. Step 3: Cross multiply
   42,322.13x = 66,958.69 × 66,958.69
4. Step 4: Simplify right side
   42,322.13x = 4,483,465,831.72
5. Step 5: Solve for x
   x = 4,483,465,831.72/42,322.13
6. Step 6: Final answer
   x = 105,936.69