Finding the Third Proportional to 402,478.50 and 544,668

Step by Step Solution

1. Step 1: Write the proportion equation
   402,478.50 : 544,668 = 544,668 : x
2. Step 2: Convert to fraction form
   402,478.50/544,668 = 544,668/x
3. Step 3: Cross multiply
   402,478.50x = 544,668 × 544,668
4. Step 4: Simplify right side
   402,478.50x = 296,663,230,224
5. Step 5: Solve for x
   x = 296,663,230,224/402,478.50
6. Step 6: Final answer
   x = 737,090.88