Finding the Third Proportional to 151,485 and 212,404

Step by Step Solution

1. Step 1: Write the proportion equation
   151,485 : 212,404 = 212,404 : x
2. Step 2: Convert to fraction form
   151,485/212,404 = 212,404/x
3. Step 3: Cross multiply
   151,485x = 212,404 × 212,404
4. Step 4: Simplify right side
   151,485x = 45,115,459,216
5. Step 5: Solve for x
   x = 45,115,459,216/151,485
6. Step 6: Final answer
   x = 297,821.30