Finding the Third Proportional to 12,448 and 28,820

Step by Step Solution

1. Step 1: Write the proportion equation
   12,448 : 28,820 = 28,820 : x
2. Step 2: Convert to fraction form
   12,448/28,820 = 28,820/x
3. Step 3: Cross multiply
   12,448x = 28,820 × 28,820
4. Step 4: Simplify right side
   12,448x = 830,592,400
5. Step 5: Solve for x
   x = 830,592,400/12,448
6. Step 6: Final answer
   x = 66,724.97