Finding the Third Proportional to 219,213 and 328,849.88

Step by Step Solution

1. Step 1: Write the proportion equation
   219,213 : 328,849.88 = 328,849.88 : x
2. Step 2: Convert to fraction form
   219,213/328,849.88 = 328,849.88/x
3. Step 3: Cross multiply
   219,213x = 328,849.88 × 328,849.88
4. Step 4: Simplify right side
   219,213x = 108,142,240,287.52
5. Step 5: Solve for x
   x = 108,142,240,287.52/219,213
6. Step 6: Final answer
   x = 493,320.38