Finding the Third Proportional to 99,724.50 and 215,304

Step by Step Solution

1. Step 1: Write the proportion equation
   99,724.50 : 215,304 = 215,304 : x
2. Step 2: Convert to fraction form
   99,724.50/215,304 = 215,304/x
3. Step 3: Cross multiply
   99,724.50x = 215,304 × 215,304
4. Step 4: Simplify right side
   99,724.50x = 46,355,812,416
5. Step 5: Solve for x
   x = 46,355,812,416/99,724.50
6. Step 6: Final answer
   x = 464,838.75