Finding the Third Proportional to 21,558 and 30,429

Step by Step Solution

1. Step 1: Write the proportion equation
   21,558 : 30,429 = 30,429 : x
2. Step 2: Convert to fraction form
   21,558/30,429 = 30,429/x
3. Step 3: Cross multiply
   21,558x = 30,429 × 30,429
4. Step 4: Simplify right side
   21,558x = 925,924,041
5. Step 5: Solve for x
   x = 925,924,041/21,558
6. Step 6: Final answer
   x = 42,950.37