Finding the Third Proportional to 85,890,678 and 185,397,676

Step by Step Solution

1. Step 1: Write the proportion equation
   85,890,678 : 185,397,676 = 185,397,676 : x
2. Step 2: Convert to fraction form
   85,890,678/185,397,676 = 185,397,676/x
3. Step 3: Cross multiply
   85,890,678x = 185,397,676 × 185,397,676
4. Step 4: Simplify right side
   85,890,678x = 34,372,298,266,200,976
5. Step 5: Solve for x
   x = 34,372,298,266,200,976/85,890,678
6. Step 6: Final answer
   x = 400,186,598.44