Finding the Third Proportional to 42,406 and 61,907

Step by Step Solution

1. Step 1: Write the proportion equation
   42,406 : 61,907 = 61,907 : x
2. Step 2: Convert to fraction form
   42,406/61,907 = 61,907/x
3. Step 3: Cross multiply
   42,406x = 61,907 × 61,907
4. Step 4: Simplify right side
   42,406x = 3,832,476,649
5. Step 5: Solve for x
   x = 3,832,476,649/42,406
6. Step 6: Final answer
   x = 90,375.81