Finding the Third Proportional to 404,158.50 and 869,278.50

Step by Step Solution

1. Step 1: Write the proportion equation
   404,158.50 : 869,278.50 = 869,278.50 : x
2. Step 2: Convert to fraction form
   404,158.50/869,278.50 = 869,278.50/x
3. Step 3: Cross multiply
   404,158.50x = 869,278.50 × 869,278.50
4. Step 4: Simplify right side
   404,158.50x = 755,645,110,562.25
5. Step 5: Solve for x
   x = 755,645,110,562.25/404,158.50
6. Step 6: Final answer
   x = 1,869,675.17