Finding the Third Proportional to 21,516 and 30,246

Step by Step Solution

1. Step 1: Write the proportion equation
   21,516 : 30,246 = 30,246 : x
2. Step 2: Convert to fraction form
   21,516/30,246 = 30,246/x
3. Step 3: Cross multiply
   21,516x = 30,246 × 30,246
4. Step 4: Simplify right side
   21,516x = 914,820,516
5. Step 5: Solve for x
   x = 914,820,516/21,516
6. Step 6: Final answer
   x = 42,518.15