Finding the Third Proportional to 361,390.50 and 777,281

Step by Step Solution

1. Step 1: Write the proportion equation
   361,390.50 : 777,281 = 777,281 : x
2. Step 2: Convert to fraction form
   361,390.50/777,281 = 777,281/x
3. Step 3: Cross multiply
   361,390.50x = 777,281 × 777,281
4. Step 4: Simplify right side
   361,390.50x = 604,165,752,961
5. Step 5: Solve for x
   x = 604,165,752,961/361,390.50
6. Step 6: Final answer
   x = 1,671,780.95