Finding the Third Proportional to 386,734.50 and 830,614.50

Step by Step Solution

1. Step 1: Write the proportion equation
   386,734.50 : 830,614.50 = 830,614.50 : x
2. Step 2: Convert to fraction form
   386,734.50/830,614.50 = 830,614.50/x
3. Step 3: Cross multiply
   386,734.50x = 830,614.50 × 830,614.50
4. Step 4: Simplify right side
   386,734.50x = 689,920,447,610.25
5. Step 5: Solve for x
   x = 689,920,447,610.25/386,734.50
6. Step 6: Final answer
   x = 1,783,964.06