Finding the Third Proportional to 387,409.50 and 839,151

Step by Step Solution

1. Step 1: Write the proportion equation
   387,409.50 : 839,151 = 839,151 : x
2. Step 2: Convert to fraction form
   387,409.50/839,151 = 839,151/x
3. Step 3: Cross multiply
   387,409.50x = 839,151 × 839,151
4. Step 4: Simplify right side
   387,409.50x = 704,174,400,801
5. Step 5: Solve for x
   x = 704,174,400,801/387,409.50
6. Step 6: Final answer
   x = 1,817,648.77