Finding the Third Proportional to 164,260 and 215,690

Step by Step Solution

1. Step 1: Write the proportion equation
   164,260 : 215,690 = 215,690 : x
2. Step 2: Convert to fraction form
   164,260/215,690 = 215,690/x
3. Step 3: Cross multiply
   164,260x = 215,690 × 215,690
4. Step 4: Simplify right side
   164,260x = 46,522,176,100
5. Step 5: Solve for x
   x = 46,522,176,100/164,260
6. Step 6: Final answer
   x = 283,222.79