Finding the Third Proportional to 405,178.50 and 879,045

Step by Step Solution

1. Step 1: Write the proportion equation
   405,178.50 : 879,045 = 879,045 : x
2. Step 2: Convert to fraction form
   405,178.50/879,045 = 879,045/x
3. Step 3: Cross multiply
   405,178.50x = 879,045 × 879,045
4. Step 4: Simplify right side
   405,178.50x = 772,720,112,025
5. Step 5: Solve for x
   x = 772,720,112,025/405,178.50
6. Step 6: Final answer
   x = 1,907,110.35