Finding the Third Proportional to 30,691.50 and 45,030

Step by Step Solution

1. Step 1: Write the proportion equation
   30,691.50 : 45,030 = 45,030 : x
2. Step 2: Convert to fraction form
   30,691.50/45,030 = 45,030/x
3. Step 3: Cross multiply
   30,691.50x = 45,030 × 45,030
4. Step 4: Simplify right side
   30,691.50x = 2,027,700,900
5. Step 5: Solve for x
   x = 2,027,700,900/30,691.50
6. Step 6: Final answer
   x = 66,067.18