Finding the Third Proportional to 21,111.38 and 29,688.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,111.38 : 29,688.75 = 29,688.75 : x
2. Step 2: Convert to fraction form
   21,111.38/29,688.75 = 29,688.75/x
3. Step 3: Cross multiply
   21,111.38x = 29,688.75 × 29,688.75
4. Step 4: Simplify right side
   21,111.38x = 881,421,876.56
5. Step 5: Solve for x
   x = 881,421,876.56/21,111.38
6. Step 6: Final answer
   x = 41,751.04