Finding the Third Proportional to 641,938.50 and 993,447

Step by Step Solution

1. Step 1: Write the proportion equation
   641,938.50 : 993,447 = 993,447 : x
2. Step 2: Convert to fraction form
   641,938.50/993,447 = 993,447/x
3. Step 3: Cross multiply
   641,938.50x = 993,447 × 993,447
4. Step 4: Simplify right side
   641,938.50x = 986,936,941,809
5. Step 5: Solve for x
   x = 986,936,941,809/641,938.50
6. Step 6: Final answer
   x = 1,537,432.23