Finding the Third Proportional to 21,411 and 30,830.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,411 : 30,830.63 = 30,830.63 : x
2. Step 2: Convert to fraction form
   21,411/30,830.63 = 30,830.63/x
3. Step 3: Cross multiply
   21,411x = 30,830.63 × 30,830.63
4. Step 4: Simplify right side
   21,411x = 950,527,437.89
5. Step 5: Solve for x
   x = 950,527,437.89/21,411
6. Step 6: Final answer
   x = 44,394.35