Finding the Third Proportional to 372,981.50 and 815,787

Step by Step Solution

1. Step 1: Write the proportion equation
   372,981.50 : 815,787 = 815,787 : x
2. Step 2: Convert to fraction form
   372,981.50/815,787 = 815,787/x
3. Step 3: Cross multiply
   372,981.50x = 815,787 × 815,787
4. Step 4: Simplify right side
   372,981.50x = 665,508,429,369
5. Step 5: Solve for x
   x = 665,508,429,369/372,981.50
6. Step 6: Final answer
   x = 1,784,293.40