Finding the Third Proportional to 10,680.19 and 26,191.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,680.19 : 26,191.69 = 26,191.69 : x
2. Step 2: Convert to fraction form
   10,680.19/26,191.69 = 26,191.69/x
3. Step 3: Cross multiply
   10,680.19x = 26,191.69 × 26,191.69
4. Step 4: Simplify right side
   10,680.19x = 686,004,494.10
5. Step 5: Solve for x
   x = 686,004,494.10/10,680.19
6. Step 6: Final answer
   x = 64,231.50