Finding the Third Proportional to 152,698.50 and 319,338

Step by Step Solution

1. Step 1: Write the proportion equation
   152,698.50 : 319,338 = 319,338 : x
2. Step 2: Convert to fraction form
   152,698.50/319,338 = 319,338/x
3. Step 3: Cross multiply
   152,698.50x = 319,338 × 319,338
4. Step 4: Simplify right side
   152,698.50x = 101,976,758,244
5. Step 5: Solve for x
   x = 101,976,758,244/152,698.50
6. Step 6: Final answer
   x = 667,830.78