Finding the Third Proportional to 56,404 and 75,990

Step by Step Solution

1. Step 1: Write the proportion equation
   56,404 : 75,990 = 75,990 : x
2. Step 2: Convert to fraction form
   56,404/75,990 = 75,990/x
3. Step 3: Cross multiply
   56,404x = 75,990 × 75,990
4. Step 4: Simplify right side
   56,404x = 5,774,480,100
5. Step 5: Solve for x
   x = 5,774,480,100/56,404
6. Step 6: Final answer
   x = 102,377.14