Finding the Third Proportional to 30,888.50 and 67,321

Step by Step Solution

1. Step 1: Write the proportion equation
   30,888.50 : 67,321 = 67,321 : x
2. Step 2: Convert to fraction form
   30,888.50/67,321 = 67,321/x
3. Step 3: Cross multiply
   30,888.50x = 67,321 × 67,321
4. Step 4: Simplify right side
   30,888.50x = 4,532,117,041
5. Step 5: Solve for x
   x = 4,532,117,041/30,888.50
6. Step 6: Final answer
   x = 146,725.06