Finding the Third Proportional to 18,478.13 and 40,499.25

Step by Step Solution

1. Step 1: Write the proportion equation
   18,478.13 : 40,499.25 = 40,499.25 : x
2. Step 2: Convert to fraction form
   18,478.13/40,499.25 = 40,499.25/x
3. Step 3: Cross multiply
   18,478.13x = 40,499.25 × 40,499.25
4. Step 4: Simplify right side
   18,478.13x = 1,640,189,250.56
5. Step 5: Solve for x
   x = 1,640,189,250.56/18,478.13
6. Step 6: Final answer
   x = 88,763.84