Finding the Third Proportional to 199,615.50 and 299,424

Step by Step Solution

1. Step 1: Write the proportion equation
   199,615.50 : 299,424 = 299,424 : x
2. Step 2: Convert to fraction form
   199,615.50/299,424 = 299,424/x
3. Step 3: Cross multiply
   199,615.50x = 299,424 × 299,424
4. Step 4: Simplify right side
   199,615.50x = 89,654,731,776
5. Step 5: Solve for x
   x = 89,654,731,776/199,615.50
6. Step 6: Final answer
   x = 449,137.13