Finding the Third Proportional to 376,900.50 and 820,231.50

Step by Step Solution

1. Step 1: Write the proportion equation
   376,900.50 : 820,231.50 = 820,231.50 : x
2. Step 2: Convert to fraction form
   376,900.50/820,231.50 = 820,231.50/x
3. Step 3: Cross multiply
   376,900.50x = 820,231.50 × 820,231.50
4. Step 4: Simplify right side
   376,900.50x = 672,779,713,592.25
5. Step 5: Solve for x
   x = 672,779,713,592.25/376,900.50
6. Step 6: Final answer
   x = 1,785,032.69