Finding the Third Proportional to 478.98 and 1,031.34

Step by Step Solution

1. Step 1: Write the proportion equation
   478.98 : 1,031.34 = 1,031.34 : x
2. Step 2: Convert to fraction form
   478.98/1,031.34 = 1,031.34/x
3. Step 3: Cross multiply
   478.98x = 1,031.34 × 1,031.34
4. Step 4: Simplify right side
   478.98x = 1,063,664.27
5. Step 5: Solve for x
   x = 1,063,664.27/478.98
6. Step 6: Final answer
   x = 2,220.66