Finding the Third Proportional to 25,990 and 56,140

Step by Step Solution

1. Step 1: Write the proportion equation
   25,990 : 56,140 = 56,140 : x
2. Step 2: Convert to fraction form
   25,990/56,140 = 56,140/x
3. Step 3: Cross multiply
   25,990x = 56,140 × 56,140
4. Step 4: Simplify right side
   25,990x = 3,151,699,600
5. Step 5: Solve for x
   x = 3,151,699,600/25,990
6. Step 6: Final answer
   x = 121,265.86