Finding the Third Proportional to 387,246 and 843,388.50

Step by Step Solution

1. Step 1: Write the proportion equation
   387,246 : 843,388.50 = 843,388.50 : x
2. Step 2: Convert to fraction form
   387,246/843,388.50 = 843,388.50/x
3. Step 3: Cross multiply
   387,246x = 843,388.50 × 843,388.50
4. Step 4: Simplify right side
   387,246x = 711,304,161,932.25
5. Step 5: Solve for x
   x = 711,304,161,932.25/387,246
6. Step 6: Final answer
   x = 1,836,827.65