Finding the Third Proportional to 403,438.50 and 877,842

Step by Step Solution

1. Step 1: Write the proportion equation
   403,438.50 : 877,842 = 877,842 : x
2. Step 2: Convert to fraction form
   403,438.50/877,842 = 877,842/x
3. Step 3: Cross multiply
   403,438.50x = 877,842 × 877,842
4. Step 4: Simplify right side
   403,438.50x = 770,606,576,964
5. Step 5: Solve for x
   x = 770,606,576,964/403,438.50
6. Step 6: Final answer
   x = 1,910,096.77