Finding the Third Proportional to 12,619.50 and 18,929.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,619.50 : 18,929.25 = 18,929.25 : x
2. Step 2: Convert to fraction form
   12,619.50/18,929.25 = 18,929.25/x
3. Step 3: Cross multiply
   12,619.50x = 18,929.25 × 18,929.25
4. Step 4: Simplify right side
   12,619.50x = 358,316,505.56
5. Step 5: Solve for x
   x = 358,316,505.56/12,619.50
6. Step 6: Final answer
   x = 28,393.88