Finding the Third Proportional to 15,900.50 and 31,400.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,900.50 : 31,400.50 = 31,400.50 : x
2. Step 2: Convert to fraction form
   15,900.50/31,400.50 = 31,400.50/x
3. Step 3: Cross multiply
   15,900.50x = 31,400.50 × 31,400.50
4. Step 4: Simplify right side
   15,900.50x = 985,991,400.25
5. Step 5: Solve for x
   x = 985,991,400.25/15,900.50
6. Step 6: Final answer
   x = 62,010.09