Finding the Third Proportional to 645,108.75 and 997,218

Step by Step Solution

1. Step 1: Write the proportion equation
   645,108.75 : 997,218 = 997,218 : x
2. Step 2: Convert to fraction form
   645,108.75/997,218 = 997,218/x
3. Step 3: Cross multiply
   645,108.75x = 997,218 × 997,218
4. Step 4: Simplify right side
   645,108.75x = 994,443,739,524
5. Step 5: Solve for x
   x = 994,443,739,524/645,108.75
6. Step 6: Final answer
   x = 1,541,513.33