Finding the Third Proportional to 152,780 and 328,964

Step by Step Solution

1. Step 1: Write the proportion equation
   152,780 : 328,964 = 328,964 : x
2. Step 2: Convert to fraction form
   152,780/328,964 = 328,964/x
3. Step 3: Cross multiply
   152,780x = 328,964 × 328,964
4. Step 4: Simplify right side
   152,780x = 108,217,313,296
5. Step 5: Solve for x
   x = 108,217,313,296/152,780
6. Step 6: Final answer
   x = 708,321.20