Finding the Third Proportional to 373,923 and 815,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   373,923 : 815,521.50 = 815,521.50 : x
2. Step 2: Convert to fraction form
   373,923/815,521.50 = 815,521.50/x
3. Step 3: Cross multiply
   373,923x = 815,521.50 × 815,521.50
4. Step 4: Simplify right side
   373,923x = 665,075,316,962.25
5. Step 5: Solve for x
   x = 665,075,316,962.25/373,923
6. Step 6: Final answer
   x = 1,778,642.44