Finding the Third Proportional to 36,990 and 56,412

Step by Step Solution

1. Step 1: Write the proportion equation
   36,990 : 56,412 = 56,412 : x
2. Step 2: Convert to fraction form
   36,990/56,412 = 56,412/x
3. Step 3: Cross multiply
   36,990x = 56,412 × 56,412
4. Step 4: Simplify right side
   36,990x = 3,182,313,744
5. Step 5: Solve for x
   x = 3,182,313,744/36,990
6. Step 6: Final answer
   x = 86,031.73