Finding the Third Proportional to 42,282 and 55,611

Step by Step Solution

1. Step 1: Write the proportion equation
   42,282 : 55,611 = 55,611 : x
2. Step 2: Convert to fraction form
   42,282/55,611 = 55,611/x
3. Step 3: Cross multiply
   42,282x = 55,611 × 55,611
4. Step 4: Simplify right side
   42,282x = 3,092,583,321
5. Step 5: Solve for x
   x = 3,092,583,321/42,282
6. Step 6: Final answer
   x = 73,141.84