Finding the Third Proportional to 9,690 and 14,899.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,690 : 14,899.50 = 14,899.50 : x
2. Step 2: Convert to fraction form
   9,690/14,899.50 = 14,899.50/x
3. Step 3: Cross multiply
   9,690x = 14,899.50 × 14,899.50
4. Step 4: Simplify right side
   9,690x = 221,995,100.25
5. Step 5: Solve for x
   x = 221,995,100.25/9,690
6. Step 6: Final answer
   x = 22,909.71