Finding the Third Proportional to 72,787 and 154,321

Step by Step Solution

1. Step 1: Write the proportion equation
   72,787 : 154,321 = 154,321 : x
2. Step 2: Convert to fraction form
   72,787/154,321 = 154,321/x
3. Step 3: Cross multiply
   72,787x = 154,321 × 154,321
4. Step 4: Simplify right side
   72,787x = 23,814,971,041
5. Step 5: Solve for x
   x = 23,814,971,041/72,787
6. Step 6: Final answer
   x = 327,187.15