Finding the Third Proportional to 21,468 and 28,854

Step by Step Solution

1. Step 1: Write the proportion equation
   21,468 : 28,854 = 28,854 : x
2. Step 2: Convert to fraction form
   21,468/28,854 = 28,854/x
3. Step 3: Cross multiply
   21,468x = 28,854 × 28,854
4. Step 4: Simplify right side
   21,468x = 832,553,316
5. Step 5: Solve for x
   x = 832,553,316/21,468
6. Step 6: Final answer
   x = 38,781.13