Finding the Third Proportional to 10,559.81 and 15,808.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,559.81 : 15,808.50 = 15,808.50 : x
2. Step 2: Convert to fraction form
   10,559.81/15,808.50 = 15,808.50/x
3. Step 3: Cross multiply
   10,559.81x = 15,808.50 × 15,808.50
4. Step 4: Simplify right side
   10,559.81x = 249,908,672.25
5. Step 5: Solve for x
   x = 249,908,672.25/10,559.81
6. Step 6: Final answer
   x = 23,666.01