Finding the Third Proportional to 1,991.22 and 3,072.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,991.22 : 3,072.62 = 3,072.62 : x
2. Step 2: Convert to fraction form
   1,991.22/3,072.62 = 3,072.62/x
3. Step 3: Cross multiply
   1,991.22x = 3,072.62 × 3,072.62
4. Step 4: Simplify right side
   1,991.22x = 9,441,000.39
5. Step 5: Solve for x
   x = 9,441,000.39/1,991.22
6. Step 6: Final answer
   x = 4,741.31