Finding the Third Proportional to 381,091.50 and 839,929.50

Step by Step Solution

1. Step 1: Write the proportion equation
   381,091.50 : 839,929.50 = 839,929.50 : x
2. Step 2: Convert to fraction form
   381,091.50/839,929.50 = 839,929.50/x
3. Step 3: Cross multiply
   381,091.50x = 839,929.50 × 839,929.50
4. Step 4: Simplify right side
   381,091.50x = 705,481,564,970.25
5. Step 5: Solve for x
   x = 705,481,564,970.25/381,091.50
6. Step 6: Final answer
   x = 1,851,213.07