Finding the Third Proportional to 90,011.25 and 196,992

Step by Step Solution

1. Step 1: Write the proportion equation
   90,011.25 : 196,992 = 196,992 : x
2. Step 2: Convert to fraction form
   90,011.25/196,992 = 196,992/x
3. Step 3: Cross multiply
   90,011.25x = 196,992 × 196,992
4. Step 4: Simplify right side
   90,011.25x = 38,805,848,064
5. Step 5: Solve for x
   x = 38,805,848,064/90,011.25
6. Step 6: Final answer
   x = 431,122.20