Finding the Third Proportional to 289,488.94 and 637,875

Step by Step Solution

1. Step 1: Write the proportion equation
   289,488.94 : 637,875 = 637,875 : x
2. Step 2: Convert to fraction form
   289,488.94/637,875 = 637,875/x
3. Step 3: Cross multiply
   289,488.94x = 637,875 × 637,875
4. Step 4: Simplify right side
   289,488.94x = 406,884,515,625
5. Step 5: Solve for x
   x = 406,884,515,625/289,488.94
6. Step 6: Final answer
   x = 1,405,526.99