Finding the Third Proportional to 28,086 and 42,243

Step by Step Solution

1. Step 1: Write the proportion equation
   28,086 : 42,243 = 42,243 : x
2. Step 2: Convert to fraction form
   28,086/42,243 = 42,243/x
3. Step 3: Cross multiply
   28,086x = 42,243 × 42,243
4. Step 4: Simplify right side
   28,086x = 1,784,471,049
5. Step 5: Solve for x
   x = 1,784,471,049/28,086
6. Step 6: Final answer
   x = 63,535.96