Finding the Third Proportional to 519,783.50 and 777,560

Step by Step Solution

1. Step 1: Write the proportion equation
   519,783.50 : 777,560 = 777,560 : x
2. Step 2: Convert to fraction form
   519,783.50/777,560 = 777,560/x
3. Step 3: Cross multiply
   519,783.50x = 777,560 × 777,560
4. Step 4: Simplify right side
   519,783.50x = 604,599,553,600
5. Step 5: Solve for x
   x = 604,599,553,600/519,783.50
6. Step 6: Final answer
   x = 1,163,175.73