Finding the Third Proportional to 85,890,676 and 185,397,672

Step by Step Solution

1. Step 1: Write the proportion equation
   85,890,676 : 185,397,672 = 185,397,672 : x
2. Step 2: Convert to fraction form
   85,890,676/185,397,672 = 185,397,672/x
3. Step 3: Cross multiply
   85,890,676x = 185,397,672 × 185,397,672
4. Step 4: Simplify right side
   85,890,676x = 34,372,296,783,019,584
5. Step 5: Solve for x
   x = 34,372,296,783,019,584/85,890,676
6. Step 6: Final answer
   x = 400,186,590.49