Finding the Third Proportional to 39,672 and 87,008

Step by Step Solution

1. Step 1: Write the proportion equation
   39,672 : 87,008 = 87,008 : x
2. Step 2: Convert to fraction form
   39,672/87,008 = 87,008/x
3. Step 3: Cross multiply
   39,672x = 87,008 × 87,008
4. Step 4: Simplify right side
   39,672x = 7,570,392,064
5. Step 5: Solve for x
   x = 7,570,392,064/39,672
6. Step 6: Final answer
   x = 190,824.56