Finding the Third Proportional to 4,870 and 5,590

Step by Step Solution

1. Step 1: Write the proportion equation
   4,870 : 5,590 = 5,590 : x
2. Step 2: Convert to fraction form
   4,870/5,590 = 5,590/x
3. Step 3: Cross multiply
   4,870x = 5,590 × 5,590
4. Step 4: Simplify right side
   4,870x = 31,248,100
5. Step 5: Solve for x
   x = 31,248,100/4,870
6. Step 6: Final answer
   x = 6,416.45