Finding the Third Proportional to 28,192.75 and 66,789.63

Step by Step Solution

1. Step 1: Write the proportion equation
   28,192.75 : 66,789.63 = 66,789.63 : x
2. Step 2: Convert to fraction form
   28,192.75/66,789.63 = 66,789.63/x
3. Step 3: Cross multiply
   28,192.75x = 66,789.63 × 66,789.63
4. Step 4: Simplify right side
   28,192.75x = 4,460,854,007.64
5. Step 5: Solve for x
   x = 4,460,854,007.64/28,192.75
6. Step 6: Final answer
   x = 158,226.99