Finding the Third Proportional to 18,702 and 28,066.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,702 : 28,066.50 = 28,066.50 : x
2. Step 2: Convert to fraction form
   18,702/28,066.50 = 28,066.50/x
3. Step 3: Cross multiply
   18,702x = 28,066.50 × 28,066.50
4. Step 4: Simplify right side
   18,702x = 787,728,422.25
5. Step 5: Solve for x
   x = 787,728,422.25/18,702
6. Step 6: Final answer
   x = 42,120.01