Finding the Third Proportional to 1,620.09 and 3,554.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620.09 : 3,554.06 = 3,554.06 : x
2. Step 2: Convert to fraction form
   1,620.09/3,554.06 = 3,554.06/x
3. Step 3: Cross multiply
   1,620.09x = 3,554.06 × 3,554.06
4. Step 4: Simplify right side
   1,620.09x = 12,631,360.25
5. Step 5: Solve for x
   x = 12,631,360.25/1,620.09
6. Step 6: Final answer
   x = 7,796.68