Finding the Third Proportional to 296,316 and 648,846

Step by Step Solution

1. Step 1: Write the proportion equation
   296,316 : 648,846 = 648,846 : x
2. Step 2: Convert to fraction form
   296,316/648,846 = 648,846/x
3. Step 3: Cross multiply
   296,316x = 648,846 × 648,846
4. Step 4: Simplify right side
   296,316x = 421,001,131,716
5. Step 5: Solve for x
   x = 421,001,131,716/296,316
6. Step 6: Final answer
   x = 1,420,784.34