Finding the Third Proportional to 637,318 and 1,387,028

Step by Step Solution

1. Step 1: Write the proportion equation
   637,318 : 1,387,028 = 1,387,028 : x
2. Step 2: Convert to fraction form
   637,318/1,387,028 = 1,387,028/x
3. Step 3: Cross multiply
   637,318x = 1,387,028 × 1,387,028
4. Step 4: Simplify right side
   637,318x = 1,923,846,672,784
5. Step 5: Solve for x
   x = 1,923,846,672,784/637,318
6. Step 6: Final answer
   x = 3,018,660.50