Finding the Third Proportional to 378,337.50 and 791,721

Step by Step Solution

1. Step 1: Write the proportion equation
   378,337.50 : 791,721 = 791,721 : x
2. Step 2: Convert to fraction form
   378,337.50/791,721 = 791,721/x
3. Step 3: Cross multiply
   378,337.50x = 791,721 × 791,721
4. Step 4: Simplify right side
   378,337.50x = 626,822,141,841
5. Step 5: Solve for x
   x = 626,822,141,841/378,337.50
6. Step 6: Final answer
   x = 1,656,780.37