Finding the Third Proportional to 18,117 and 42,275.25

Step by Step Solution

1. Step 1: Write the proportion equation
   18,117 : 42,275.25 = 42,275.25 : x
2. Step 2: Convert to fraction form
   18,117/42,275.25 = 42,275.25/x
3. Step 3: Cross multiply
   18,117x = 42,275.25 × 42,275.25
4. Step 4: Simplify right side
   18,117x = 1,787,196,762.56
5. Step 5: Solve for x
   x = 1,787,196,762.56/18,117
6. Step 6: Final answer
   x = 98,647.50