Finding the Third Proportional to 21,512.34 and 30,240.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,512.34 : 30,240.62 = 30,240.62 : x
2. Step 2: Convert to fraction form
   21,512.34/30,240.62 = 30,240.62/x
3. Step 3: Cross multiply
   21,512.34x = 30,240.62 × 30,240.62
4. Step 4: Simplify right side
   21,512.34x = 914,495,341.33
5. Step 5: Solve for x
   x = 914,495,341.33/21,512.34
6. Step 6: Final answer
   x = 42,510.27