Finding the Third Proportional to 7,937.75 and 12,558.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,937.75 : 12,558.50 = 12,558.50 : x
2. Step 2: Convert to fraction form
   7,937.75/12,558.50 = 12,558.50/x
3. Step 3: Cross multiply
   7,937.75x = 12,558.50 × 12,558.50
4. Step 4: Simplify right side
   7,937.75x = 157,715,922.25
5. Step 5: Solve for x
   x = 157,715,922.25/7,937.75
6. Step 6: Final answer
   x = 19,869.10