Finding the Third Proportional to 18,166.50 and 42,455.25

Step by Step Solution

1. Step 1: Write the proportion equation
   18,166.50 : 42,455.25 = 42,455.25 : x
2. Step 2: Convert to fraction form
   18,166.50/42,455.25 = 42,455.25/x
3. Step 3: Cross multiply
   18,166.50x = 42,455.25 × 42,455.25
4. Step 4: Simplify right side
   18,166.50x = 1,802,448,252.56
5. Step 5: Solve for x
   x = 1,802,448,252.56/18,166.50
6. Step 6: Final answer
   x = 99,218.25