Finding the Third Proportional to 15,316.50 and 31,281

Step by Step Solution

1. Step 1: Write the proportion equation
   15,316.50 : 31,281 = 31,281 : x
2. Step 2: Convert to fraction form
   15,316.50/31,281 = 31,281/x
3. Step 3: Cross multiply
   15,316.50x = 31,281 × 31,281
4. Step 4: Simplify right side
   15,316.50x = 978,500,961
5. Step 5: Solve for x
   x = 978,500,961/15,316.50
6. Step 6: Final answer
   x = 63,885.42