Finding the Third Proportional to 11,912 and 28,164

Step by Step Solution

1. Step 1: Write the proportion equation
   11,912 : 28,164 = 28,164 : x
2. Step 2: Convert to fraction form
   11,912/28,164 = 28,164/x
3. Step 3: Cross multiply
   11,912x = 28,164 × 28,164
4. Step 4: Simplify right side
   11,912x = 793,210,896
5. Step 5: Solve for x
   x = 793,210,896/11,912
6. Step 6: Final answer
   x = 66,589.23