Finding the Third Proportional to 42,320 and 91,930

Step by Step Solution

1. Step 1: Write the proportion equation
   42,320 : 91,930 = 91,930 : x
2. Step 2: Convert to fraction form
   42,320/91,930 = 91,930/x
3. Step 3: Cross multiply
   42,320x = 91,930 × 91,930
4. Step 4: Simplify right side
   42,320x = 8,451,124,900
5. Step 5: Solve for x
   x = 8,451,124,900/42,320
6. Step 6: Final answer
   x = 199,695.77