Finding the Third Proportional to 378,958.50 and 822,231

Step by Step Solution

1. Step 1: Write the proportion equation
   378,958.50 : 822,231 = 822,231 : x
2. Step 2: Convert to fraction form
   378,958.50/822,231 = 822,231/x
3. Step 3: Cross multiply
   378,958.50x = 822,231 × 822,231
4. Step 4: Simplify right side
   378,958.50x = 676,063,817,361
5. Step 5: Solve for x
   x = 676,063,817,361/378,958.50
6. Step 6: Final answer
   x = 1,784,004.89