Finding the Third Proportional to 30,678.89 and 45,007.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,678.89 : 45,007.88 = 45,007.88 : x
2. Step 2: Convert to fraction form
   30,678.89/45,007.88 = 45,007.88/x
3. Step 3: Cross multiply
   30,678.89x = 45,007.88 × 45,007.88
4. Step 4: Simplify right side
   30,678.89x = 2,025,708,812.02
5. Step 5: Solve for x
   x = 2,025,708,812.02/30,678.89
6. Step 6: Final answer
   x = 66,029.40