Finding the Third Proportional to 378,973.50 and 810,453

Step by Step Solution

1. Step 1: Write the proportion equation
   378,973.50 : 810,453 = 810,453 : x
2. Step 2: Convert to fraction form
   378,973.50/810,453 = 810,453/x
3. Step 3: Cross multiply
   378,973.50x = 810,453 × 810,453
4. Step 4: Simplify right side
   378,973.50x = 656,834,065,209
5. Step 5: Solve for x
   x = 656,834,065,209/378,973.50
6. Step 6: Final answer
   x = 1,733,192.60