Finding the Third Proportional to 380,570 and 836,469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   380,570 : 836,469.50 = 836,469.50 : x
2. Step 2: Convert to fraction form
   380,570/836,469.50 = 836,469.50/x
3. Step 3: Cross multiply
   380,570x = 836,469.50 × 836,469.50
4. Step 4: Simplify right side
   380,570x = 699,681,224,430.25
5. Step 5: Solve for x
   x = 699,681,224,430.25/380,570
6. Step 6: Final answer
   x = 1,838,508.62