Finding the Third Proportional to 190,584 and 418,500

Step by Step Solution

1. Step 1: Write the proportion equation
   190,584 : 418,500 = 418,500 : x
2. Step 2: Convert to fraction form
   190,584/418,500 = 418,500/x
3. Step 3: Cross multiply
   190,584x = 418,500 × 418,500
4. Step 4: Simplify right side
   190,584x = 175,142,250,000
5. Step 5: Solve for x
   x = 175,142,250,000/190,584
6. Step 6: Final answer
   x = 918,976.67