Finding the Third Proportional to 18,172 and 28,078

Step by Step Solution

1. Step 1: Write the proportion equation
   18,172 : 28,078 = 28,078 : x
2. Step 2: Convert to fraction form
   18,172/28,078 = 28,078/x
3. Step 3: Cross multiply
   18,172x = 28,078 × 28,078
4. Step 4: Simplify right side
   18,172x = 788,374,084
5. Step 5: Solve for x
   x = 788,374,084/18,172
6. Step 6: Final answer
   x = 43,384.00