Finding the Third Proportional to 312,903 and 756,337.50

Step by Step Solution

1. Step 1: Write the proportion equation
   312,903 : 756,337.50 = 756,337.50 : x
2. Step 2: Convert to fraction form
   312,903/756,337.50 = 756,337.50/x
3. Step 3: Cross multiply
   312,903x = 756,337.50 × 756,337.50
4. Step 4: Simplify right side
   312,903x = 572,046,413,906.25
5. Step 5: Solve for x
   x = 572,046,413,906.25/312,903
6. Step 6: Final answer
   x = 1,828,190.89