Finding the Third Proportional to 19,456 and 28,900.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,456 : 28,900.50 = 28,900.50 : x
2. Step 2: Convert to fraction form
   19,456/28,900.50 = 28,900.50/x
3. Step 3: Cross multiply
   19,456x = 28,900.50 × 28,900.50
4. Step 4: Simplify right side
   19,456x = 835,238,900.25
5. Step 5: Solve for x
   x = 835,238,900.25/19,456
6. Step 6: Final answer
   x = 42,929.63