Finding the Third Proportional to 33,815.25 and 72,321

Step by Step Solution

1. Step 1: Write the proportion equation
   33,815.25 : 72,321 = 72,321 : x
2. Step 2: Convert to fraction form
   33,815.25/72,321 = 72,321/x
3. Step 3: Cross multiply
   33,815.25x = 72,321 × 72,321
4. Step 4: Simplify right side
   33,815.25x = 5,230,327,041
5. Step 5: Solve for x
   x = 5,230,327,041/33,815.25
6. Step 6: Final answer
   x = 154,673.62