Finding the Third Proportional to 14,990 and 21,656.25

Step by Step Solution

1. Step 1: Write the proportion equation
   14,990 : 21,656.25 = 21,656.25 : x
2. Step 2: Convert to fraction form
   14,990/21,656.25 = 21,656.25/x
3. Step 3: Cross multiply
   14,990x = 21,656.25 × 21,656.25
4. Step 4: Simplify right side
   14,990x = 468,993,164.06
5. Step 5: Solve for x
   x = 468,993,164.06/14,990
6. Step 6: Final answer
   x = 31,287.07