Finding the Third Proportional to 5,107.50 and 9,961.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,107.50 : 9,961.88 = 9,961.88 : x
2. Step 2: Convert to fraction form
   5,107.50/9,961.88 = 9,961.88/x
3. Step 3: Cross multiply
   5,107.50x = 9,961.88 × 9,961.88
4. Step 4: Simplify right side
   5,107.50x = 99,238,953.52
5. Step 5: Solve for x
   x = 99,238,953.52/5,107.50
6. Step 6: Final answer
   x = 19,430.04