Finding the Third Proportional to 76,405,290 and 164,910,404

Step by Step Solution

1. Step 1: Write the proportion equation
   76,405,290 : 164,910,404 = 164,910,404 : x
2. Step 2: Convert to fraction form
   76,405,290/164,910,404 = 164,910,404/x
3. Step 3: Cross multiply
   76,405,290x = 164,910,404 × 164,910,404
4. Step 4: Simplify right side
   76,405,290x = 27,195,441,347,443,216
5. Step 5: Solve for x
   x = 27,195,441,347,443,216/76,405,290
6. Step 6: Final answer
   x = 355,936,628.83