Finding the Third Proportional to 16,821.56 and 35,386.03

Step by Step Solution

1. Step 1: Write the proportion equation
   16,821.56 : 35,386.03 = 35,386.03 : x
2. Step 2: Convert to fraction form
   16,821.56/35,386.03 = 35,386.03/x
3. Step 3: Cross multiply
   16,821.56x = 35,386.03 × 35,386.03
4. Step 4: Simplify right side
   16,821.56x = 1,252,171,207.63
5. Step 5: Solve for x
   x = 1,252,171,207.63/16,821.56
6. Step 6: Final answer
   x = 74,438.46