Finding the Third Proportional to 375,661.50 and 810,507

Step by Step Solution

1. Step 1: Write the proportion equation
   375,661.50 : 810,507 = 810,507 : x
2. Step 2: Convert to fraction form
   375,661.50/810,507 = 810,507/x
3. Step 3: Cross multiply
   375,661.50x = 810,507 × 810,507
4. Step 4: Simplify right side
   375,661.50x = 656,921,597,049
5. Step 5: Solve for x
   x = 656,921,597,049/375,661.50
6. Step 6: Final answer
   x = 1,748,706.21