Finding the Third Proportional to 380,818.50 and 836,370

Step by Step Solution

1. Step 1: Write the proportion equation
   380,818.50 : 836,370 = 836,370 : x
2. Step 2: Convert to fraction form
   380,818.50/836,370 = 836,370/x
3. Step 3: Cross multiply
   380,818.50x = 836,370 × 836,370
4. Step 4: Simplify right side
   380,818.50x = 699,514,776,900
5. Step 5: Solve for x
   x = 699,514,776,900/380,818.50
6. Step 6: Final answer
   x = 1,836,871.84