Finding the Third Proportional to 387,382.50 and 839,106

Step by Step Solution

1. Step 1: Write the proportion equation
   387,382.50 : 839,106 = 839,106 : x
2. Step 2: Convert to fraction form
   387,382.50/839,106 = 839,106/x
3. Step 3: Cross multiply
   387,382.50x = 839,106 × 839,106
4. Step 4: Simplify right side
   387,382.50x = 704,098,879,236
5. Step 5: Solve for x
   x = 704,098,879,236/387,382.50
6. Step 6: Final answer
   x = 1,817,580.50