Finding the Third Proportional to 1,459.90 and 3,111.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,459.90 : 3,111.54 = 3,111.54 : x
2. Step 2: Convert to fraction form
   1,459.90/3,111.54 = 3,111.54/x
3. Step 3: Cross multiply
   1,459.90x = 3,111.54 × 3,111.54
4. Step 4: Simplify right side
   1,459.90x = 9,681,675.34
5. Step 5: Solve for x
   x = 9,681,675.34/1,459.90
6. Step 6: Final answer
   x = 6,631.75