Finding the Third Proportional to 387,354.50 and 843,301.50

Step by Step Solution

1. Step 1: Write the proportion equation
   387,354.50 : 843,301.50 = 843,301.50 : x
2. Step 2: Convert to fraction form
   387,354.50/843,301.50 = 843,301.50/x
3. Step 3: Cross multiply
   387,354.50x = 843,301.50 × 843,301.50
4. Step 4: Simplify right side
   387,354.50x = 711,157,419,902.25
5. Step 5: Solve for x
   x = 711,157,419,902.25/387,354.50
6. Step 6: Final answer
   x = 1,835,934.32