Finding the Third Proportional to 388,596 and 916,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   388,596 : 916,018.50 = 916,018.50 : x
2. Step 2: Convert to fraction form
   388,596/916,018.50 = 916,018.50/x
3. Step 3: Cross multiply
   388,596x = 916,018.50 × 916,018.50
4. Step 4: Simplify right side
   388,596x = 839,089,892,342.25
5. Step 5: Solve for x
   x = 839,089,892,342.25/388,596
6. Step 6: Final answer
   x = 2,159,285.97