Finding the Third Proportional to 42,144 and 56,552

Step by Step Solution

1. Step 1: Write the proportion equation
   42,144 : 56,552 = 56,552 : x
2. Step 2: Convert to fraction form
   42,144/56,552 = 56,552/x
3. Step 3: Cross multiply
   42,144x = 56,552 × 56,552
4. Step 4: Simplify right side
   42,144x = 3,198,128,704
5. Step 5: Solve for x
   x = 3,198,128,704/42,144
6. Step 6: Final answer
   x = 75,885.74