Finding the Third Proportional to 292,938 and 439,408.50

Step by Step Solution

1. Step 1: Write the proportion equation
   292,938 : 439,408.50 = 439,408.50 : x
2. Step 2: Convert to fraction form
   292,938/439,408.50 = 439,408.50/x
3. Step 3: Cross multiply
   292,938x = 439,408.50 × 439,408.50
4. Step 4: Simplify right side
   292,938x = 193,079,829,872.25
5. Step 5: Solve for x
   x = 193,079,829,872.25/292,938
6. Step 6: Final answer
   x = 659,115.00