Finding the Third Proportional to 42,120 and 61,452

Step by Step Solution

1. Step 1: Write the proportion equation
   42,120 : 61,452 = 61,452 : x
2. Step 2: Convert to fraction form
   42,120/61,452 = 61,452/x
3. Step 3: Cross multiply
   42,120x = 61,452 × 61,452
4. Step 4: Simplify right side
   42,120x = 3,776,348,304
5. Step 5: Solve for x
   x = 3,776,348,304/42,120
6. Step 6: Final answer
   x = 89,656.89