Finding the Third Proportional to 365,526.50 and 815,099

Step by Step Solution

1. Step 1: Write the proportion equation
   365,526.50 : 815,099 = 815,099 : x
2. Step 2: Convert to fraction form
   365,526.50/815,099 = 815,099/x
3. Step 3: Cross multiply
   365,526.50x = 815,099 × 815,099
4. Step 4: Simplify right side
   365,526.50x = 664,386,379,801
5. Step 5: Solve for x
   x = 664,386,379,801/365,526.50
6. Step 6: Final answer
   x = 1,817,614.81