Finding the Third Proportional to 61,272 and 70,992

Step by Step Solution

1. Step 1: Write the proportion equation
   61,272 : 70,992 = 70,992 : x
2. Step 2: Convert to fraction form
   61,272/70,992 = 70,992/x
3. Step 3: Cross multiply
   61,272x = 70,992 × 70,992
4. Step 4: Simplify right side
   61,272x = 5,039,864,064
5. Step 5: Solve for x
   x = 5,039,864,064/61,272
6. Step 6: Final answer
   x = 82,253.95