Finding the Third Proportional to 1,521.75 and 3,127.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.75 : 3,127.88 = 3,127.88 : x
2. Step 2: Convert to fraction form
   1,521.75/3,127.88 = 3,127.88/x
3. Step 3: Cross multiply
   1,521.75x = 3,127.88 × 3,127.88
4. Step 4: Simplify right side
   1,521.75x = 9,783,602.02
5. Step 5: Solve for x
   x = 9,783,602.02/1,521.75
6. Step 6: Final answer
   x = 6,429.18