Finding the Third Proportional to 15,439.50 and 31,607

Step by Step Solution

1. Step 1: Write the proportion equation
   15,439.50 : 31,607 = 31,607 : x
2. Step 2: Convert to fraction form
   15,439.50/31,607 = 31,607/x
3. Step 3: Cross multiply
   15,439.50x = 31,607 × 31,607
4. Step 4: Simplify right side
   15,439.50x = 999,002,449
5. Step 5: Solve for x
   x = 999,002,449/15,439.50
6. Step 6: Final answer
   x = 64,704.33