Finding the Third Proportional to 406,142 and 880,078

Step by Step Solution

1. Step 1: Write the proportion equation
   406,142 : 880,078 = 880,078 : x
2. Step 2: Convert to fraction form
   406,142/880,078 = 880,078/x
3. Step 3: Cross multiply
   406,142x = 880,078 × 880,078
4. Step 4: Simplify right side
   406,142x = 774,537,286,084
5. Step 5: Solve for x
   x = 774,537,286,084/406,142
6. Step 6: Final answer
   x = 1,907,060.30