Finding the Third Proportional to 28,414 and 42,621

Step by Step Solution

1. Step 1: Write the proportion equation
   28,414 : 42,621 = 42,621 : x
2. Step 2: Convert to fraction form
   28,414/42,621 = 42,621/x
3. Step 3: Cross multiply
   28,414x = 42,621 × 42,621
4. Step 4: Simplify right side
   28,414x = 1,816,549,641
5. Step 5: Solve for x
   x = 1,816,549,641/28,414
6. Step 6: Final answer
   x = 63,931.50