Finding the Third Proportional to 20,630 and 42,354

Step by Step Solution

1. Step 1: Write the proportion equation
   20,630 : 42,354 = 42,354 : x
2. Step 2: Convert to fraction form
   20,630/42,354 = 42,354/x
3. Step 3: Cross multiply
   20,630x = 42,354 × 42,354
4. Step 4: Simplify right side
   20,630x = 1,793,861,316
5. Step 5: Solve for x
   x = 1,793,861,316/20,630
6. Step 6: Final answer
   x = 86,954.01