Finding the Third Proportional to 5,320.69 and 12,830.91

Step by Step Solution

1. Step 1: Write the proportion equation
   5,320.69 : 12,830.91 = 12,830.91 : x
2. Step 2: Convert to fraction form
   5,320.69/12,830.91 = 12,830.91/x
3. Step 3: Cross multiply
   5,320.69x = 12,830.91 × 12,830.91
4. Step 4: Simplify right side
   5,320.69x = 164,632,155.20
5. Step 5: Solve for x
   x = 164,632,155.20/5,320.69
6. Step 6: Final answer
   x = 30,941.90