Finding the Third Proportional to 42,080 and 90,518

Step by Step Solution

1. Step 1: Write the proportion equation
   42,080 : 90,518 = 90,518 : x
2. Step 2: Convert to fraction form
   42,080/90,518 = 90,518/x
3. Step 3: Cross multiply
   42,080x = 90,518 × 90,518
4. Step 4: Simplify right side
   42,080x = 8,193,508,324
5. Step 5: Solve for x
   x = 8,193,508,324/42,080
6. Step 6: Final answer
   x = 194,712.65