Finding the Third Proportional to 42,678 and 61,475

Step by Step Solution

1. Step 1: Write the proportion equation
   42,678 : 61,475 = 61,475 : x
2. Step 2: Convert to fraction form
   42,678/61,475 = 61,475/x
3. Step 3: Cross multiply
   42,678x = 61,475 × 61,475
4. Step 4: Simplify right side
   42,678x = 3,779,175,625
5. Step 5: Solve for x
   x = 3,779,175,625/42,678
6. Step 6: Final answer
   x = 88,550.91