Finding the Third Proportional to 12,990.38 and 28,007.44

Step by Step Solution

1. Step 1: Write the proportion equation
   12,990.38 : 28,007.44 = 28,007.44 : x
2. Step 2: Convert to fraction form
   12,990.38/28,007.44 = 28,007.44/x
3. Step 3: Cross multiply
   12,990.38x = 28,007.44 × 28,007.44
4. Step 4: Simplify right side
   12,990.38x = 784,416,555.32
5. Step 5: Solve for x
   x = 784,416,555.32/12,990.38
6. Step 6: Final answer
   x = 60,384.44