Finding the Third Proportional to 12,990.38 and 28,031.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,990.38 : 28,031.06 = 28,031.06 : x
2. Step 2: Convert to fraction form
   12,990.38/28,031.06 = 28,031.06/x
3. Step 3: Cross multiply
   12,990.38x = 28,031.06 × 28,031.06
4. Step 4: Simplify right side
   12,990.38x = 785,740,464.88
5. Step 5: Solve for x
   x = 785,740,464.88/12,990.38
6. Step 6: Final answer
   x = 60,486.36