Finding the Third Proportional to 164,808 and 316,488

Step by Step Solution

1. Step 1: Write the proportion equation
   164,808 : 316,488 = 316,488 : x
2. Step 2: Convert to fraction form
   164,808/316,488 = 316,488/x
3. Step 3: Cross multiply
   164,808x = 316,488 × 316,488
4. Step 4: Simplify right side
   164,808x = 100,164,654,144
5. Step 5: Solve for x
   x = 100,164,654,144/164,808
6. Step 6: Final answer
   x = 607,765.73