Finding the Third Proportional to 61,091 and 80,520

Step by Step Solution

1. Step 1: Write the proportion equation
   61,091 : 80,520 = 80,520 : x
2. Step 2: Convert to fraction form
   61,091/80,520 = 80,520/x
3. Step 3: Cross multiply
   61,091x = 80,520 × 80,520
4. Step 4: Simplify right side
   61,091x = 6,483,470,400
5. Step 5: Solve for x
   x = 6,483,470,400/61,091
6. Step 6: Final answer
   x = 106,128.08