Finding the Third Proportional to 1,631.81 and 4,419.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,631.81 : 4,419.56 = 4,419.56 : x
2. Step 2: Convert to fraction form
   1,631.81/4,419.56 = 4,419.56/x
3. Step 3: Cross multiply
   1,631.81x = 4,419.56 × 4,419.56
4. Step 4: Simplify right side
   1,631.81x = 19,532,532.69
5. Step 5: Solve for x
   x = 19,532,532.69/1,631.81
6. Step 6: Final answer
   x = 11,969.84