Finding the Third Proportional to 5,209.31 and 10,600.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,209.31 : 10,600.88 = 10,600.88 : x
2. Step 2: Convert to fraction form
   5,209.31/10,600.88 = 10,600.88/x
3. Step 3: Cross multiply
   5,209.31x = 10,600.88 × 10,600.88
4. Step 4: Simplify right side
   5,209.31x = 112,378,550.77
5. Step 5: Solve for x
   x = 112,378,550.77/5,209.31
6. Step 6: Final answer
   x = 21,572.63