Finding the Third Proportional to 42,992 and 90,808

Step by Step Solution

1. Step 1: Write the proportion equation
   42,992 : 90,808 = 90,808 : x
2. Step 2: Convert to fraction form
   42,992/90,808 = 90,808/x
3. Step 3: Cross multiply
   42,992x = 90,808 × 90,808
4. Step 4: Simplify right side
   42,992x = 8,246,092,864
5. Step 5: Solve for x
   x = 8,246,092,864/42,992
6. Step 6: Final answer
   x = 191,805.29