Finding the Third Proportional to 139,933.50 and 299,814

Step by Step Solution

1. Step 1: Write the proportion equation
   139,933.50 : 299,814 = 299,814 : x
2. Step 2: Convert to fraction form
   139,933.50/299,814 = 299,814/x
3. Step 3: Cross multiply
   139,933.50x = 299,814 × 299,814
4. Step 4: Simplify right side
   139,933.50x = 89,888,434,596
5. Step 5: Solve for x
   x = 89,888,434,596/139,933.50
6. Step 6: Final answer
   x = 642,365.37