Finding the Third Proportional to 42,280 and 65,557

Step by Step Solution

1. Step 1: Write the proportion equation
   42,280 : 65,557 = 65,557 : x
2. Step 2: Convert to fraction form
   42,280/65,557 = 65,557/x
3. Step 3: Cross multiply
   42,280x = 65,557 × 65,557
4. Step 4: Simplify right side
   42,280x = 4,297,720,249
5. Step 5: Solve for x
   x = 4,297,720,249/42,280
6. Step 6: Final answer
   x = 101,649.01