Finding the Third Proportional to 388,276 and 830,530

Step by Step Solution

1. Step 1: Write the proportion equation
   388,276 : 830,530 = 830,530 : x
2. Step 2: Convert to fraction form
   388,276/830,530 = 830,530/x
3. Step 3: Cross multiply
   388,276x = 830,530 × 830,530
4. Step 4: Simplify right side
   388,276x = 689,780,080,900
5. Step 5: Solve for x
   x = 689,780,080,900/388,276
6. Step 6: Final answer
   x = 1,776,520.00