Finding the Third Proportional to 28,424 and 42,636

Step by Step Solution

1. Step 1: Write the proportion equation
   28,424 : 42,636 = 42,636 : x
2. Step 2: Convert to fraction form
   28,424/42,636 = 42,636/x
3. Step 3: Cross multiply
   28,424x = 42,636 × 42,636
4. Step 4: Simplify right side
   28,424x = 1,817,828,496
5. Step 5: Solve for x
   x = 1,817,828,496/28,424
6. Step 6: Final answer
   x = 63,954