Finding the Third Proportional to 378,655.50 and 810,513

Step by Step Solution

1. Step 1: Write the proportion equation
   378,655.50 : 810,513 = 810,513 : x
2. Step 2: Convert to fraction form
   378,655.50/810,513 = 810,513/x
3. Step 3: Cross multiply
   378,655.50x = 810,513 × 810,513
4. Step 4: Simplify right side
   378,655.50x = 656,931,323,169
5. Step 5: Solve for x
   x = 656,931,323,169/378,655.50
6. Step 6: Final answer
   x = 1,734,905.01