Finding the Third Proportional to 18,478.25 and 27,688.75

Step by Step Solution

1. Step 1: Write the proportion equation
   18,478.25 : 27,688.75 = 27,688.75 : x
2. Step 2: Convert to fraction form
   18,478.25/27,688.75 = 27,688.75/x
3. Step 3: Cross multiply
   18,478.25x = 27,688.75 × 27,688.75
4. Step 4: Simplify right side
   18,478.25x = 766,666,876.56
5. Step 5: Solve for x
   x = 766,666,876.56/18,478.25
6. Step 6: Final answer
   x = 41,490.23