Finding the Third Proportional to 523,809 and 800,869.50

Step by Step Solution

1. Step 1: Write the proportion equation
   523,809 : 800,869.50 = 800,869.50 : x
2. Step 2: Convert to fraction form
   523,809/800,869.50 = 800,869.50/x
3. Step 3: Cross multiply
   523,809x = 800,869.50 × 800,869.50
4. Step 4: Simplify right side
   523,809x = 641,391,956,030.25
5. Step 5: Solve for x
   x = 641,391,956,030.25/523,809
6. Step 6: Final answer
   x = 1,224,476.78