Finding the Third Proportional to 21,460.50 and 28,878.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,460.50 : 28,878.75 = 28,878.75 : x
2. Step 2: Convert to fraction form
   21,460.50/28,878.75 = 28,878.75/x
3. Step 3: Cross multiply
   21,460.50x = 28,878.75 × 28,878.75
4. Step 4: Simplify right side
   21,460.50x = 833,982,201.56
5. Step 5: Solve for x
   x = 833,982,201.56/21,460.50
6. Step 6: Final answer
   x = 38,861.27