Finding the Third Proportional to 312,697 and 737,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   312,697 : 737,426.50 = 737,426.50 : x
2. Step 2: Convert to fraction form
   312,697/737,426.50 = 737,426.50/x
3. Step 3: Cross multiply
   312,697x = 737,426.50 × 737,426.50
4. Step 4: Simplify right side
   312,697x = 543,797,842,902.25
5. Step 5: Solve for x
   x = 543,797,842,902.25/312,697
6. Step 6: Final answer
   x = 1,739,056.80