Finding the Third Proportional to 99,591.50 and 215,039

Step by Step Solution

1. Step 1: Write the proportion equation
   99,591.50 : 215,039 = 215,039 : x
2. Step 2: Convert to fraction form
   99,591.50/215,039 = 215,039/x
3. Step 3: Cross multiply
   99,591.50x = 215,039 × 215,039
4. Step 4: Simplify right side
   99,591.50x = 46,241,771,521
5. Step 5: Solve for x
   x = 46,241,771,521/99,591.50
6. Step 6: Final answer
   x = 464,314.44