Finding the Third Proportional to 42,531 and 67,281

Step by Step Solution

1. Step 1: Write the proportion equation
   42,531 : 67,281 = 67,281 : x
2. Step 2: Convert to fraction form
   42,531/67,281 = 67,281/x
3. Step 3: Cross multiply
   42,531x = 67,281 × 67,281
4. Step 4: Simplify right side
   42,531x = 4,526,732,961
5. Step 5: Solve for x
   x = 4,526,732,961/42,531
6. Step 6: Final answer
   x = 106,433.73